1
0
mirror of https://github.com/vlang/v.git synced 2023-08-10 21:13:21 +03:00
v/vlib/strings/builder.js.v

51 lines
988 B
V
Raw Normal View History

2020-02-03 07:00:36 +03:00
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
2019-06-23 05:21:30 +03:00
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
2019-09-14 23:48:30 +03:00
module strings
2019-06-22 21:20:28 +03:00
2019-10-24 12:47:21 +03:00
pub struct Builder {
mut:
buf []byte
2019-12-16 18:54:44 +03:00
pub mut:
2020-12-21 23:00:32 +03:00
len int
initial_size int = 1
2019-06-22 21:20:28 +03:00
}
pub fn new_builder(initial_size int) Builder {
2020-12-21 23:00:32 +03:00
return Builder{
buf: make(0, initial_size, sizeof(byte))
initial_size: initial_size
2019-06-22 21:20:28 +03:00
}
}
2020-05-17 14:51:18 +03:00
pub fn (mut b Builder) write_b(data byte) {
2019-12-06 23:02:09 +03:00
b.buf << data
2019-12-08 14:34:51 +03:00
b.len++
2019-12-06 23:02:09 +03:00
}
2020-05-17 14:51:18 +03:00
pub fn (mut b Builder) write(s string) {
2019-10-10 01:27:16 +03:00
b.buf.push_many(s.str, s.len)
2020-12-21 23:00:32 +03:00
// b.buf << []byte(s) // TODO
b.len += s.len
2019-06-22 21:20:28 +03:00
}
2020-05-17 14:51:18 +03:00
pub fn (mut b Builder) writeln(s string) {
2019-10-10 01:27:16 +03:00
b.buf.push_many(s.str, s.len)
2020-12-21 23:00:32 +03:00
// b.buf << []byte(s) // TODO
b.buf << `\n`
b.len += s.len + 1
2019-06-22 21:20:28 +03:00
}
pub fn (b Builder) str() string {
return unsafe { byteptr(b.buf.data).vstring_with_len(b.len) }
2019-06-22 21:20:28 +03:00
}
2020-05-17 14:51:18 +03:00
pub fn (mut b Builder) cut(n int) {
b.len -= n
2019-06-22 21:20:28 +03:00
}
2020-05-17 14:51:18 +03:00
pub fn (mut b Builder) free() {
b.buf = make(0, b.initial_size, 1)
b.len = 0
2019-06-24 23:34:21 +03:00
}