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// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module strings
pub struct Builder {
mut:
buf []byte
pub mut:
len int
initial_size int = 1
}
pub fn new_builder(initial_size int) Builder {
return Builder{
buf: make(0, initial_size, sizeof(byte))
initial_size: initial_size
}
}
pub fn (mut b Builder) write_b(data byte) {
b.buf << data
b.len++
}
pub fn (mut b Builder) write_string(s string) {
b.buf.push_many(s.str, s.len)
// b.buf << []byte(s) // TODO
b.len += s.len
}
pub fn (mut b Builder) writeln(s string) {
b.buf.push_many(s.str, s.len)
// b.buf << []byte(s) // TODO
b.buf << `\n`
b.len += s.len + 1
}
pub fn (b Builder) str() string {
x := &byte(b.buf.data)
return unsafe { x.vstring_with_len(b.len) }
}
pub fn (mut b Builder) cut(n int) {
b.len -= n
}
pub fn (mut b Builder) free() {
b.buf = make(0, b.initial_size, 1)
b.len = 0
}
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