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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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52
Userland/truncate.cpp
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@ -38,29 +38,31 @@ enum TruncateOperation {
int main(int argc, char** argv)
{
CArgsParser args_parser("truncate");
const char* resize = nullptr;
const char* reference = nullptr;
const char* file = nullptr;
args_parser.add_arg("s", "size", "Resize the target file to (or by) this size. Prefix with + or - to expand or shrink the file, or a bare number to set the size exactly.");
args_parser.add_arg("r", "reference", "Resize the target file to match the size of this one.");
args_parser.add_required_single_value("file");
CArgsParser args_parser;
args_parser.add_option(resize, "Resize the target file to (or by) this size. Prefix with + or - to expand or shrink the file, or a bare number to set the size exactly", "size", 's', "size");
args_parser.add_option(reference, "Resize the target file to match the size of this one", "reference", 'r', "file");
args_parser.add_positional_argument(file, "File path", "file");
args_parser.parse(argc, argv);
CArgsParserResult args = args_parser.parse(argc, argv);
if (!args.is_present("s") && !args.is_present("r")) {
args_parser.print_usage();
return -1;
if (!resize && !reference) {
args_parser.print_usage(stderr, argv[0]);
return 1;
}
if (args.is_present("s") && args.is_present("r")) {
args_parser.print_usage();
return -1;
if (resize && reference) {
args_parser.print_usage(stderr, argv[0]);
return 1;
}
auto op = OP_Set;
int size = 0;
if (args.is_present("s")) {
auto str = args.get("s");
if (resize) {
String str = resize;
switch (str[0]) {
case '+':
@ -76,35 +78,33 @@ int main(int argc, char** argv)
bool ok;
size = str.to_int(ok);
if (!ok) {
args_parser.print_usage();
return -1;
args_parser.print_usage(stderr, argv[0]);
return 1;
}
}
if (args.is_present("r")) {
if (reference) {
struct stat st;
int rc = stat(args.get("r").characters(), &st);
int rc = stat(reference, &st);
if (rc < 0) {
perror("stat");
return -1;
return 1;
}
op = OP_Set;
size = st.st_size;
}
auto name = args.get_single_values()[0];
int fd = open(name.characters(), O_RDWR | O_CREAT, 0666);
int fd = open(file, O_RDWR | O_CREAT, 0666);
if (fd < 0) {
perror("open");
return -1;
return 1;
}
struct stat st;
if (fstat(fd, &st) < 0) {
perror("fstat");
return -1;
return 1;
}
switch (op) {
@ -120,12 +120,12 @@ int main(int argc, char** argv)
if (ftruncate(fd, size) < 0) {
perror("ftruncate");
return -1;
return 1;
}
if (close(fd) < 0) {
perror("close");
return -1;
return 1;
}
return 0;