forked from Archives/fx
147 lines
3.1 KiB
JavaScript
Executable File
147 lines
3.1 KiB
JavaScript
Executable File
#!/usr/bin/env node
|
|
'use strict'
|
|
const os = require('os')
|
|
const fs = require('fs')
|
|
const path = require('path')
|
|
|
|
const skip = Symbol('skip')
|
|
global.select = function select(cb) {
|
|
return json => {
|
|
if (!cb(json)) {
|
|
throw skip
|
|
}
|
|
return json
|
|
}
|
|
}
|
|
|
|
try {
|
|
require(path.join(os.homedir(), '.fxrc')) // Should be required before config.js usage.
|
|
} catch (err) {
|
|
if (err.code !== 'MODULE_NOT_FOUND') {
|
|
throw err
|
|
}
|
|
}
|
|
|
|
const print = require('./print')
|
|
const reduce = require('./reduce')
|
|
const stream = require('./stream')
|
|
|
|
const usage = `
|
|
Usage
|
|
$ fx [code ...]
|
|
|
|
Shortcuts
|
|
q or Esc or Ctrl+c Exit
|
|
up or k Move cursor up
|
|
down or j Move cursor down
|
|
left or h Collapse
|
|
right or l Expand
|
|
Shift+right or L Expand all under cursor
|
|
e Expand all
|
|
E Collapse all
|
|
g Scroll to top
|
|
G Scroll to bottom
|
|
. Edit filter
|
|
/ Search
|
|
n Find next
|
|
|
|
Examples
|
|
$ echo '{"key": "value"}' | fx 'x => x.key'
|
|
value
|
|
|
|
$ echo '{"key": "value"}' | fx .key
|
|
value
|
|
|
|
$ echo '[1,2,3]' | fx 'this.map(x => x * 2)'
|
|
[2, 4, 6]
|
|
|
|
$ echo '{"items": ["one", "two"]}' | fx 'this.items' 'this[1]'
|
|
two
|
|
|
|
$ echo '{"count": 0}' | fx '{...this, count: 1}'
|
|
{"count": 1}
|
|
|
|
$ echo '{"foo": 1, "bar": 2}' | fx ?
|
|
["foo", "bar"]
|
|
|
|
`
|
|
|
|
const {stdin, stdout, stderr} = process
|
|
const args = process.argv.slice(2)
|
|
|
|
|
|
void function main() {
|
|
stdin.setEncoding('utf8')
|
|
|
|
if (stdin.isTTY) {
|
|
handle('')
|
|
return
|
|
}
|
|
|
|
const reader = stream(stdin, apply)
|
|
|
|
stdin.on('readable', reader.read)
|
|
stdin.on('end', () => {
|
|
if (!reader.isStream()) {
|
|
handle(reader.value())
|
|
}
|
|
})
|
|
}()
|
|
|
|
|
|
function handle(input) {
|
|
let filename = 'fx'
|
|
|
|
if (input === '') {
|
|
if (args.length === 0 || (args.length === 1 && (args[0] === '-h' || args[0] === '--help'))) {
|
|
stderr.write(usage)
|
|
process.exit(2)
|
|
}
|
|
if (args.length === 1 && (args[0] === '-v' || args[0] === '--version')) {
|
|
stderr.write(require('./package.json').version + '\n')
|
|
process.exit(2)
|
|
}
|
|
if (args.length === 1 && args[0] === '--life') {
|
|
require('./bang')
|
|
return
|
|
}
|
|
|
|
input = fs.readFileSync(args[0])
|
|
filename = path.basename(args[0])
|
|
args.shift()
|
|
}
|
|
|
|
const json = JSON.parse(input)
|
|
|
|
if (args.length === 0 && stdout.isTTY) {
|
|
require('./fx')(filename, json)
|
|
return
|
|
}
|
|
|
|
apply(json)
|
|
}
|
|
|
|
|
|
function apply(json) {
|
|
let output
|
|
|
|
try {
|
|
output = args.reduce(reduce, json)
|
|
} catch (e) {
|
|
if (e !== skip) {
|
|
throw e
|
|
} else {
|
|
return
|
|
}
|
|
}
|
|
|
|
if (typeof output === 'undefined') {
|
|
stderr.write('undefined\n')
|
|
} else if (typeof output === 'string') {
|
|
console.log(output)
|
|
} else {
|
|
const [text] = print(output)
|
|
console.log(text)
|
|
}
|
|
}
|