forked from
karlseguin.tngl.sh/buffer.zig
A poolable string builder (aka string buffer) for Zig
Add copy helper
Karl Seguin
(Jul 20, 2023, 4:42 PM +0800)
b6513022
657b3bdd
+17
+17
src/string_builder.zig
+17
src/string_builder.zig
···
147
147
}
148
148
}
149
149
150
+
pub fn copy(self: StringBuilder, allocator: Allocator) ![]const u8 {
151
+
const pos = self.pos;
152
+
var c = try allocator.alloc(u8, pos);
153
+
@memcpy(c, self.buf[0..pos]);
154
+
return c;
155
+
}
156
+
150
157
pub fn writer(self: *StringBuilder) Writer.IOWriter {
151
158
return .{.context = Writer.init(self)};
152
159
}
···
279
286
280
287
try std.json.stringify(.{.over = 9000, .spice = "must flow", .ok = true}, .{}, sb.writer());
281
288
try t.expectString("{\"over\":9000,\"spice\":\"must flow\",\"ok\":true}", sb.string());
289
+
}
290
+
291
+
test "copy" {
292
+
var sb = try StringBuilder.init(t.allocator, 10);
293
+
defer sb.deinit();
294
+
295
+
try sb.write("hello!!");
296
+
const c = try sb.copy(t.allocator);
297
+
defer t.allocator.free(c);
298
+
try t.expectString("hello!!", c);
282
299
}
283
300
284
301
fn testString(allocator: Allocator, random: std.rand.Random) []const u8 {