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Utilities: Add support for -d flag to tr

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Jean-Baptiste Boric 2021-07-06 20:53:17 +02:00 • committed by Andreas Kling
parent eb65e41a9c
commit 897a706075
1 changed files with 31 additions and 12 deletions
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43
Userland/Utilities/tr.cpp
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@ -12,26 +12,45 @@
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
bool delete_flag = false;
const char* from_chars = nullptr; const char* from_chars = nullptr;
const char* to_chars = nullptr; const char* to_chars = nullptr;
Core::ArgsParser args_parser; Core::ArgsParser args_parser;
args_parser.add_option(delete_flag, "Delete characters instead of replacing", nullptr, 'd');
args_parser.add_positional_argument(from_chars, "Character to translate from", "from"); args_parser.add_positional_argument(from_chars, "Character to translate from", "from");
args_parser.add_positional_argument(to_chars, "Character to translate to", "to"); args_parser.add_positional_argument(to_chars, "Character to translate to", "to", Core::ArgsParser::Required::No);
args_parser.parse(argc, argv); args_parser.parse(argc, argv);
// TODO: Support multiple characters to translate from and to if (!to_chars && !delete_flag) {
auto from = from_chars[0]; args_parser.print_usage(stderr, argv[0]);
auto to = to_chars[0]; return 1;
}
for (;;) { if (delete_flag) {
char ch = fgetc(stdin); auto from_str = AK::StringView(from_chars);
if (feof(stdin))
break; for (;;) {
if (ch == from) char ch = fgetc(stdin);
putchar(to); if (feof(stdin))
else break;
putchar(ch); if (!from_str.contains(ch))
putchar(ch);
}
} else {
// TODO: Support multiple characters to translate from and to
auto from = from_chars[0];
auto to = to_chars[0];
for (;;) {
char ch = fgetc(stdin);
if (feof(stdin))
break;
if (ch == from)
putchar(to);
else
putchar(ch);
}
} }
return 0; return 0;