89 lines
2.5 KiB
TypeScript
89 lines
2.5 KiB
TypeScript
'use strict'
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import { Neovim } from '@chemzqm/neovim'
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import { OutputChannel } from '../types'
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const logger = require('../util/logger')('outpubChannel')
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export default class BufferChannel implements OutputChannel {
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private lines: string[] = ['']
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private _disposed = false
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public created = false
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constructor(public name: string, private nvim: Neovim, private onDispose?: () => void) {
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if (!/^[\w\s-.]+$/.test(name)) throw new Error(`Invalid channel name "${name}", only word characters and white space allowed.`)
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}
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public get content(): string {
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return this.lines.join('\n')
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}
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private _append(value: string): void {
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let { nvim } = this
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let idx = this.lines.length - 1
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let newlines = value.split(/\r?\n/)
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let lastline = this.lines[idx] + newlines[0]
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this.lines[idx] = lastline
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let append = newlines.slice(1)
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this.lines = this.lines.concat(append)
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if (!this.created) return
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nvim.pauseNotification()
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nvim.call('setbufline', [this.bufname, '$', lastline], true)
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if (append.length) {
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nvim.call('appendbufline', [this.bufname, '$', append], true)
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}
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nvim.resumeNotification(false, true)
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}
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public append(value: string): void {
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if (!this.validate()) return
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this._append(value)
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}
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public appendLine(value: string): void {
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if (!this.validate()) return
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this._append(value + '\n')
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}
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public clear(keep?: number): void {
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if (!this.validate()) return
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let { nvim } = this
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this.lines = keep ? this.lines.slice(-keep) : []
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if (!this.created) return
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nvim.pauseNotification()
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nvim.call('deletebufline', [this.bufname, 1, '$'], true)
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if (this.lines.length) {
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nvim.call('appendbufline', [this.bufname, '$', this.lines], true)
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}
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nvim.resumeNotification(true, true)
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}
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public hide(): void {
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this.created = false
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this.nvim.command(`exe 'silent! bd! '.fnameescape('${this.bufname}')`, true)
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}
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private get bufname(): string {
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return `output:///${this.name}`
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}
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public show(preserveFocus?: boolean, cmd = 'vs'): void {
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let { nvim } = this
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nvim.pauseNotification()
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nvim.command(`exe '${cmd} '.fnameescape('${this.bufname}')`, true)
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if (preserveFocus) {
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nvim.command('wincmd p', true)
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}
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nvim.resumeNotification(true, true)
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this.created = true
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}
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private validate(): boolean {
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return !this._disposed
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}
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public dispose(): void {
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if (this.onDispose) this.onDispose()
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this._disposed = true
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this.hide()
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this.lines = []
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}
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}
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