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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,250 @@ | ||
| const fs = require('fs') | ||
| const tty = require('tty') | ||
| const blessed = require('neo-blessed') | ||
| const stringWidth = require('string-width') | ||
| const indent = require('indent-string') | ||
| const chalk = require('chalk') | ||
|
|
||
| module.exports = function start(input) { | ||
| const ttyFd = fs.openSync('/dev/tty', 'r+') | ||
|
|
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| const program = blessed.program({ | ||
| input: tty.ReadStream(ttyFd), | ||
| output: tty.WriteStream(ttyFd), | ||
| }) | ||
|
|
||
| const screen = blessed.screen({ | ||
| program: program, | ||
| smartCSR: true, | ||
| fullUnicode: true, | ||
| }) | ||
| screen.title = 'fx' | ||
| screen.key(['escape', 'q', 'C-c'], function (ch, key) { | ||
| return process.exit(0) | ||
| }) | ||
| screen.on('resize', render) | ||
|
|
||
| const box = blessed.box({ | ||
| parent: screen, | ||
| tags: true, | ||
| left: 0, | ||
| top: 0, | ||
| width: '100%', | ||
| height: '100%', | ||
| keys: true, | ||
| vi: true, | ||
| alwaysScroll: true, | ||
| scrollable: true, | ||
| }) | ||
|
|
||
| const test = blessed.box({ | ||
| parent: screen, | ||
| hidden: true, | ||
| tags: true, | ||
| width: '100%', | ||
| }) | ||
|
|
||
| const scrollSpeed = (() => { | ||
| let prev = new Date() | ||
| return () => { | ||
| const now = new Date() | ||
| const lines = now - prev < 20 ? 3 : 1 // TODO: Speed based on terminal. | ||
| prev = now | ||
| return lines | ||
| } | ||
| })() | ||
|
|
||
| box.on('wheeldown', function () { | ||
| box.scroll(scrollSpeed()) | ||
| screen.render() | ||
| }) | ||
| box.on('wheelup', function () { | ||
| box.scroll(-scrollSpeed()) | ||
| screen.render() | ||
| }) | ||
|
|
||
| // TODO: fx input | ||
| // const inputBar = blessed.textbox({ | ||
| // parent: screen, | ||
| // bottom: 0, | ||
| // left: 0, | ||
| // height: 1, | ||
| // width: '100%', | ||
| // keys: true, | ||
| // mouse: true, | ||
| // inputOnFocus: true, | ||
| // }) | ||
|
|
||
| const expanded = new Set() | ||
| expanded.add('') // Root of JSON | ||
|
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| box.key('e', function () { | ||
| walk(input, path => expanded.add(path)) | ||
| render() | ||
| }) | ||
| box.key('S-e', function () { | ||
| expanded.clear() | ||
| expanded.add('') | ||
| render() | ||
| }) | ||
|
|
||
| function walk(v, cb, path = '') { | ||
| if (Array.isArray(v)) { | ||
| cb(path) | ||
| let i = 0 | ||
| for (let item of v) { | ||
| walk(item, cb, path + '[' + (i++) + ']') | ||
| } | ||
| } | ||
|
|
||
| if (typeof v === 'object' && v.constructor === Object) { | ||
| cb(path) | ||
| let i = 0 | ||
| for (let [key, value] of Object.entries(v)) { | ||
| walk(value, cb, path + '.' + key) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| const space = 2 | ||
|
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||
| let index = new Map() | ||
| let row = 0 | ||
|
|
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| function print(input) { | ||
| row = 0 | ||
| index = new Map() | ||
| return doPrint(input) | ||
| } | ||
|
|
||
| function doPrint(v, path = '') { | ||
| const eol = () => { | ||
| row++ | ||
| return '\n' | ||
| } | ||
|
|
||
| if (typeof v === 'undefined') { | ||
| return void 0 | ||
| } | ||
|
|
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| if (v === null) { | ||
| return chalk.grey.bold(v) | ||
| } | ||
|
|
||
| if (typeof v === 'number' && Number.isFinite(v)) { | ||
| return chalk.cyan.bold(v) | ||
|
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| } | ||
|
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| if (typeof v === 'boolean') { | ||
| return chalk.yellow.bold(v) | ||
|
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| } | ||
|
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| if (typeof v === 'string') { | ||
| return chalk.green.bold(JSON.stringify(v)) | ||
| } | ||
|
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| if (Array.isArray(v)) { | ||
| index.set(row, path) | ||
|
|
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| if (!expanded.has(path)) { | ||
| return '[\u2026]' | ||
| } | ||
|
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| let output = '[' + eol() | ||
|
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| const len = v.length | ||
| let i = 0 | ||
|
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| for (let item of v) { | ||
| const value = typeof item === 'undefined' ? null : item // JSON.stringify compatibility | ||
| output += indent(doPrint(value, path + '[' + i + ']'), space) | ||
| output += i++ < len - 1 ? ',' : '' | ||
| output += eol() | ||
| } | ||
|
|
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| return output + ']' | ||
| } | ||
|
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| if (typeof v === 'object' && v.constructor === Object) { | ||
| index.set(row, path) | ||
|
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| if (!expanded.has(path)) { | ||
| return '{\u2026}' | ||
| } | ||
|
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| let output = '{' + eol() | ||
|
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| const entries = Object.entries(v).filter(noUndefined) // JSON.stringify compatibility | ||
| const len = entries.length | ||
|
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| let i = 0 | ||
| for (let [key, value] of entries) { | ||
| const part = chalk.blue.bold(JSON.stringify(key)) + ': ' + doPrint(value, path + '.' + key) | ||
| output += indent(part, space) | ||
| output += i++ < len - 1 ? ',' : '' | ||
| output += eol() | ||
| } | ||
|
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| return output + '}' | ||
| } | ||
|
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| return JSON.stringify(v) | ||
| } | ||
|
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| function noUndefined([key, value]) { | ||
| return typeof value !== 'undefined' | ||
| } | ||
|
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| box.on('click', function (mouse) { | ||
| const pos = box.childBase + mouse.y | ||
| const line = box.getScreenLines()[pos] | ||
| if (mouse.x >= stringWidth(line)) { | ||
| return | ||
| } | ||
|
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| const path = index.get(pos) | ||
| if (expanded.has(path)) { | ||
| expanded.delete(path) | ||
| } else { | ||
| expanded.add(path) | ||
| } | ||
| render() | ||
| }) | ||
|
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| function render() { | ||
| const content = print(input) | ||
|
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| // TODO: Move to own fork of blessed. | ||
| let row = 0 | ||
| for (let line of content.split('\n')) { | ||
| if (stringWidth(line) > box.width) { | ||
| test.setContent(line) | ||
| const pad = test.getScreenLines().length - 1 | ||
|
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| const update = new Map() | ||
| for (let [i, path] of index.entries()) { | ||
| if (i > row) { | ||
| index.delete(i) | ||
| update.set(i + pad, path) | ||
| } | ||
| } | ||
|
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| row += pad | ||
|
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| for (let [i, path] of update.entries()) { | ||
| index.set(i, path) | ||
| } | ||
|
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| } | ||
| row++ | ||
| } | ||
|
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| box.setContent(content) | ||
| screen.render() | ||
| } | ||
|
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| box.focus() | ||
| render() | ||
| } |
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