Anonymous user
Simple database: Difference between revisions
→{{header|D}}: make private
(D entry: removed private, because this is a complete module, not to be imported.) |
(→{{header|D}}: make private) |
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Line 640:
std.file, std.csv, std.datetime;
private {
immutable filename = "simdb.csv";
struct Item {
string name, date, category;
}▼
void addItem(in string[] item) {
if (item.length < 3)
return printUsage();
auto db = load();
const date = text(cast(DateTime)Clock.currTime);
const cat = (item.length == 4) ? item[3] : "none";
db ~= Item(item[2], date, cat);
store(db);
}
void printLatest(in string[] a) {
auto db = load();
if (db.empty)
return writeln("No entries in database.");
db.sort!q{ a.date > b.date };
if (a.length == 3) {
foreach (item; db)▼
if (item.category == a[2])
writefln("%s, %s, %s", item.tupleof);▼
} else {▼
writefln("%s, %s, %s", db[0].tupleof);▼
}
}
void printAll() {▼
auto db = load();▼
if (db.empty)▼
return writeln("No entries in database.");▼
db.sort!q{ a.date < b.date };▼
foreach (item; db)
}
▲ writefln("%s, %s, %s", item.tupleof);
▲ } else {
▲ writefln("%s, %s, %s", db[0].tupleof);
▲ }
▲void printAll() {
▲ auto db = load();
▲ if (db.empty)
▲ return writeln("No entries in database.");
▲ db.sort!q{ a.date < b.date };
▲ foreach (item; db)
Item[] load() {
Item[] db;
if (filename.exists && filename.isFile) {
try {
const text = filename.readText;
if (!text.empty)
db = csvReader!Item(text).array;
} catch (CSVException e) {
writeln(e.msg);
}
}
return db;▼
}
▲ return db;
void store(in Item[] db) {
auto f = File(filename, "w+");
foreach (item; db)
f.writefln("%s,%s,%s", item.tupleof);
}
void printUsage() {
writeln(
`Usage:
add add item, followed by optional category▼
all print all▼
For instance: add "some item name" "some category name"`);
}
}
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