72 lines
1.4 KiB
V
72 lines
1.4 KiB
V
// Copyright (c) 2020-2021 Raúl Hernández. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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module ui
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struct ExtraContext {
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mut:
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read_buf []u8
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// read_all_bytes causes all the raw bytes to be read as one event unit.
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// This is cruicial for UTF-8 support since Unicode codepoints can span several bytes.
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read_all_bytes bool = true
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}
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const ctx_ptr = &Context(0)
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pub fn init(cfg Config) &Context {
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mut ctx := &Context{
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cfg: cfg
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}
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ctx.read_buf = []u8{cap: cfg.buffer_size}
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// lmao
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unsafe {
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x := &ui.ctx_ptr
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*x = ctx
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_ = x
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}
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return ctx
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}
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[inline]
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fn save_title() {
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// restore the previously saved terminal title
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print('\x1b[22;0t')
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}
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[inline]
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fn load_title() {
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// restore the previously saved terminal title
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print('\x1b[23;0t')
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}
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pub fn (mut ctx Context) run() ? {
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if ctx.cfg.use_x11 {
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ctx.fail('error: x11 backend not implemented yet')
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exit(1)
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} else {
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ctx.termios_setup()?
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ctx.termios_loop()
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}
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}
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// shifts the array left, to remove any data that was just read, and updates its len
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// TODO: remove
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[inline]
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fn (mut ctx Context) shift(len int) {
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unsafe {
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C.memmove(ctx.read_buf.data, &u8(ctx.read_buf.data) + len, ctx.read_buf.cap - len)
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ctx.resize_arr(ctx.read_buf.len - len)
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}
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}
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// TODO: don't actually do this, lmao
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[inline]
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fn (mut ctx Context) resize_arr(size int) {
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mut l := unsafe { &ctx.read_buf.len }
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unsafe {
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*l = size
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_ = l
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}
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}
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