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Userland+Terminal: Port to new CArgsParser API

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While at it, also add some niceties and fix some things.
This commit is contained in:
Sergey Bugaev 2020-01-27 20:25:36 +03:00 • committed by Andreas Kling
parent 9276582535
commit f983dfe319
22 changed files with 392 additions and 653 deletions
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38
Userland/tail.cpp
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@ -101,34 +101,19 @@ int main(int argc, char* argv[])
return 1;
}
CArgsParser args_parser("tail");
bool follow = false;
int line_count = DEFAULT_LINE_COUNT;
const char* file = nullptr;
args_parser.add_arg("f", "follow -- appended data is output as it is written to the file");
args_parser.add_arg("n", "lines", "fetch the specified number of lines");
args_parser.add_required_single_value("file");
CArgsParser args_parser;
args_parser.add_option(follow, "Output data as it is written to the file", "follow", 'f');
args_parser.add_option(line_count, "Fetch the specified number of lines", "lines", 'n', "number");
args_parser.add_positional_argument(file, "File path", "file");
args_parser.parse(argc, argv);
CArgsParserResult args = args_parser.parse(argc, argv);
Vector<String> values = args.get_single_values();
if (values.size() != 1) {
args_parser.print_usage();
return 1;
}
int line_count = 0;
if (args.is_present("n")) {
line_count = strtol(args.get("n").characters(), NULL, 10);
if (errno == EINVAL) {
args_parser.print_usage();
return 1;
}
} else {
line_count = DEFAULT_LINE_COUNT;
}
auto f = CFile::construct(values[0]);
auto f = CFile::construct(file);
if (!f->open(CIODevice::ReadOnly)) {
fprintf(stderr, "Error opening file %s: %s\n", f->filename().characters(), strerror(errno));
fprintf(stderr, "Error opening file %s: %s\n", file, strerror(errno));
exit(1);
}
@ -137,7 +122,6 @@ int main(int argc, char* argv[])
return 1;
}
bool flag_follow = args.is_present("f");
auto pos = find_seek_pos(*f, line_count);
return tail_from_pos(*f, pos, flag_follow);
return tail_from_pos(*f, pos, follow);
}