intval3/lib/mscript/index.js

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'use strict'
let fs
let input;
/** Object representing mscript parser */
const mscript = {}
/**
* Determine whether or not argument flag has been set
*
*
* @param {string} shrt Short flag name (ie `-a`)
* @param {string} lng Long flag name (ie `--apple`)
*
*/
mscript.arg = function arg (shrt, lng) {
if (process.argv.indexOf(shrt) !== -1 ||
process.argv.indexOf(lng) !== -1) {
return true
}
return false
}
/**
* Determine position of flag, in argument array
*
*
* @param {string} shrt Short flag name (ie `-a`)
* @param {string} lng Long flag name (ie `--apple`)
*
*/
mscript.arg_pos = function arg_pos (shrt, lng) {
let pos = process.argv.indexOf(shrt)
if (pos === -1) {
pos = process.argv.indexOf(lng)
}
return pos
}
mscript.black = '0,0,0'
mscript.cmd = [
'CF',
'PF',
'BF',
'CB',
'PB',
'BB',
'D'
]
mscript.alts = {
'CF' : ['CAMERA FORWARD', 'CAM FORWARD', 'C'],
'PF' : ['PROJECTOR FORWARD', 'PROJ FORWARD', 'P'],
'BF' : ['BLACK FORWARD'],
'CB' : ['CAMERA BACKWARD', 'CAM BACKWARD', 'CAMERA BACK', 'CAM BACK'],
'PB' : ['PROJECTOR FORWARD', 'PROJ FORWARD', 'PROJECTOR BACK', 'PROJ BACK'],
'BB' : ['BLACK BACKWARD', 'BLACK BACK'],
'L ' : ['LIGHT', 'COLOR', 'LAMP']
}
mscript.state = {}
//TODO: This will memory leak
mscript.state_clear = function state_clear () {
mscript.state = {
cam : 0,
proj : 0,
color : '',
loops : [],
rec : -1
}
}
mscript.alts_unique = function alts_unique () {
const ids = Object.keys(mscript.alts)
const all = []
for (let i = 0; i < ids.length; i++) {
if (all.indexOf(ids[i]) === -1) {
all.push(ids[i])
} else {
mscript.fail(1, "Can't parse")
}
}
}
mscript.interpret = function interpret (text, callback) {
mscript.state_clear()
if (typeof text === 'undefined') {
mscript.fail(2, 'No input')
}
const lines = text.split('\n')
const arr = []
const light = []
const output = {}
let two = ''
let target = 0
let dist = 0 //?
let x
//loop through all lines
for (let line of lines) {
//preprocess line
line = mscript.preprocess(line)
two = line.substring(0, 2)
if (mscript.cmd.indexOf(two) !== -1) {
if (mscript.state.loops.length > 0) {
//hold generated arr in state loop array
mscript.state.loops[mscript.state.rec].arr.push.apply(mscript.state.loops[mscript.state.rec].arr, mscript.str_to_arr(line, two))
mscript.state.loops[mscript.state.rec].light.push.apply(mscript.state.loops[mscript.state.rec].light, mscript.light_to_arr(line, two))
} else {
arr.push.apply(arr, mscript.str_to_arr(line, two))
light.push.apply(light, mscript.light_to_arr(line, two))
}
} else if (line.substring(0, 4) === 'LOOP') {
mscript.state.rec++
mscript.state.loops[mscript.state.rec] = {
arr : [],
light : [],
cam : 0,
proj : 0,
cmd : line + ''
}
} else if (line.substring(0, 2) === 'L ') {
mscript.light_state(line)
} else if (line.substring(0, 3) === 'END') {
for (x = 0; x < mscript.loop_count(mscript.state.loops[mscript.state.rec].cmd); x++) {
if (mscript.state.rec === 0) {
arr.push.apply(arr, mscript.state.loops[mscript.state.rec].arr);
light.push.apply(light, mscript.state.loops[mscript.state.rec].light);
} else if (mscript.state.rec >= 1) {
mscript.state.loops[mscript.state.rec - 1].arr.push.apply(mscript.state.loops[mscript.state.rec - 1].arr, mscript.state.loops[mscript.state.rec].arr)
mscript.state.loops[mscript.state.rec - 1].light.push.apply(mscript.state.loops[mscript.state.rec - 1].light, mscript.state.loops[mscript.state.rec].light)
}
}
mscript.state_update('END', mscript.loop_count(mscript.state.loops[mscript.state.rec].cmd));
delete mscript.state.loops[mscript.state.rec]
mscript.state.rec--
} else if (line.substring(0, 3) === 'CAM') { //directly go to that frame (black?)
target = parseInt(line.split('CAM ')[1])
if (mscript.state.loops.length > 0) {
if (target > mscript.state.cam) {
dist = target - mscript.state.cam
for (x = 0; x < dist; x++) {
mscript.state.loops[mscript.state.rec].arr.push('BF')
mscript.state.loops[mscript.state.rec].light.push(mscript.black)
mscript.state_update('BF')
}
} else {
dist = mscript.state.cam - target
for (x = 0; x < dist; x++) {
mscript.state.loops[mscript.state.rec].arr.push('BB')
mscript.state.loops[mscript.state.rec].light.push(mscript.black)
mscript.state_update('BB')
}
}
} else {
if (target > mscript.state.cam) {
dist = target - mscript.state.cam
for (x = 0; x < dist; x++) {
arr.push('BF')
light.push(mscript.black)
mscript.state_update('BF')
}
} else {
dist = mscript.state.cam - target
for (x = 0; x < dist; x++) {
arr.push('BB')
light.push(mscript.black)
mscript.state_update('BB')
}
}
}
} else if (line.substring(0, 4) === 'PROJ') { //directly go to that frame
target = parseInt(line.split('PROJ ')[1])
if (mscript.state.loops.length > 0) {
if (target > mscript.state.proj) {
dist = target - mscript.state.proj
for (x = 0; x < dist; x++) {
mscript.state.loops[mscript.state.rec].arr.push('PF')
mscript.state.loops[mscript.state.rec].light.push('')
mscript.state_update('PF')
}
} else {
dist = mscript.state.proj - target
for (x = 0; x < dist; x++) {
mscript.state.loops[mscript.state.rec].arr.push('PB')
mscript.state.loops[mscript.state.rec].light.push('')
mscript.state_update('PB')
}
}
} else {
if (target > mscript.state.proj) {
dist = target - mscript.state.proj
for (x = 0; x < dist; x++) {
arr.push('PF')
light.push('')
mscript.state_update('PF')
}
} else {
dist = mscript.state.proj - target
for (x = 0; x < dist; x++) {
arr.push('PB')
light.push('')
mscript.state_update('PB');
}
}
}
} else if (line.substring(0, 3) === 'SET') { //set that state
if (line.substring(0, 7) === 'SET CAM') {
mscript.state.cam = parseInt(line.split('SET CAM')[1]);
} else if (line.substring(0, 8) === 'SET PROJ') {
mscript.state.proj = parseInt(line.split('SET PROJ')[1]);
}
} else if (line.substring(0, 1) === '#' || line.substring(0, 2) === '//') {
//comments
//ignore while parsing
}
}
output.success = true
output.arr = arr
output.light = light
output.cam = mscript.state.cam
output.proj = mscript.state.proj
if (typeof callback !== 'undefined') {
//should only be invoked by running mscript.tests()
callback(output)
} else {
return mscript.output(output)
}
}
mscript.preprocess = function preprocess (line) {
line = line.replace(/\t+/g, '') //strip tabs
line = line.trim() //remove excess whitespace before and after command
line = line.toUpperCase()
return line
}
mscript.last_loop = function last_loop () {
return mscript.state.loops[mscript.state.loops.length - 1]
}
mscript.parent_loop = function parent_loop () {
return mscript.state.loops[mscript.state.loops.length - 2]
}
mscript.state_update = function state_update (cmd, val) {
if (cmd === 'END') {
for (var i = 0; i < val; i++) {
if (mscript.state.rec === 0) {
mscript.state.cam += mscript.state.loops[mscript.state.rec].cam
mscript.state.proj += mscript.state.loops[mscript.state.rec].proj
} else if (mscript.state.rec >= 1) {
mscript.state.loops[mscript.state.rec - 1].cam += mscript.state.loops[mscript.state.rec].cam
mscript.state.loops[mscript.state.rec - 1].proj += mscript.state.loops[mscript.state.rec].proj
}
}
} else if (cmd === 'CF') {
if (mscript.state.loops.length < 1) {
mscript.state.cam++
} else {
mscript.state.loops[mscript.state.rec].cam++
}
} else if (cmd === 'CB') {
if (mscript.state.loops.length < 1) {
mscript.state.cam--
} else {
mscript.state.loops[mscript.state.rec].cam--
}
} else if (cmd === 'PF') {
if (mscript.state.loops.length < 1) {
mscript.state.proj++
} else {
mscript.state.loops[mscript.state.rec].proj++
}
} else if (cmd === 'PB') {
if (mscript.state.loops.length < 1) {
mscript.state.proj--
} else {
mscript.state.loops[mscript.state.rec].proj--
}
} else if (cmd === 'BF') {
if (mscript.state.loops.length < 1) {
mscript.state.cam++
} else {
mscript.state.loops[mscript.state.rec].cam++
}
} else if (cmd === 'BB') {
if (mscript.state.loops.length < 1) {
mscript.state.cam--
} else {
mscript.state.loops[mscript.state.rec].cam++
}
} else if (cmd === 'L ') {
//TODO : ????
}
}
mscript.str_to_arr = function str_to_arr (str, cmd) {
const cnt = str.split(cmd)
let arr = []
let c = parseInt(cnt[1])
if (cnt[1] === '') {
c = 1
} else {
c = parseInt(cnt[1])
}
for (var i = 0; i < c; i++) {
arr.push(cmd)
mscript.state_update(cmd)
}
return arr
}
mscript.light_state = function light_state (str) {
//add parsers for other color spaces
const color = str.replace('L ', '').trim()
mscript.state.color = color
}
mscript.light_to_arr = function light_to_arr (str, cmd) {
const cnt = str.split(cmd)
const arr = []
let c = parseInt(cnt[1])
if (cnt[1] === '') {
c = 1
} else {
c = parseInt(cnt[1])
}
for (var i = 0; i < c; i++) {
if (cmd === 'CF' || cmd === 'CB') {
arr.push(mscript.state.color)
} else if (cmd === 'BF' || cmd === 'BB') {
arr.push(mscript.black)
} else {
arr.push('')
}
}
return arr
}
mscript.loop_count = function loop_count (str) {
return parseInt(str.split('LOOP ')[1])
}
mscript.fail = function fail (code, reason) {
const obj = { success: false, error: true, msg : reason }
console.error(JSON.stringify(obj))
if (process) process.exit()
}
mscript.output = function output (data) {
let json = true; //default
if (mscript.arg('-j', '--json')) {
json = true
}
if (mscript.arg('-t', '--text')) {
json = false
}
if (json) {
console.log(JSON.stringify(data))
} else {
var ids = Object.keys(data)
for (var i = 0; i < ids.length; i++) {
console.log(ids[i] + ': ' + data[ids[i]])
}
}
}
mscript.init = function init () {
if (mscript.arg('-t', '--tests')) {
return mscript.tests()
}
if (mscript.arg('-v', '--verbose')) {
console.time('mscript')
}
if (mscript.arg('-c', '--cam')) {
mscript.state.cam = parseInt(process.argv[mscript.arg_pos('-c', '--cam') + 1])
}
if (mscript.arg('-p', '--proj')) {
mscript.state.proj = parseInt(process.argv[mscript.arg_pos('-p', '--proj') + 1])
}
if (mscript.arg('-f', '--file')) {
input = process.argv[mscript.arg_pos('-f', '--file') + 1]
mscript.interpret(fs.readFileSync(input, 'utf8'))
} else {
mscript.interpret(input)
}
if (mscript.arg('-v', '--verbose')) {
console.timeEnd('mscript')
}
};
if (typeof document === 'undefined' && typeof module !== 'undefined' && !module.parent) {
//node script
fs = require('fs')
input = process.argv[2]
mscript.init()
} else if (typeof module !== 'undefined' && module.parent) {
//module
fs = require('fs')
module.exports = mscript
} else {
//web
}
/*
CAM # - go to camera frame #
PROJ # - go to projector frame #
SET CAM # - sets camera count to #
SET PROJ # - sets projector count to #
LOOP # - begin loop, can nest recursively, # times
END LOOP - (or END) closes loop
L #RGB - sets light to rgb value
FADE
CF - Camera forwards
PF - Projector forwards
BF - Black forwards
CB - Camera backwards
PB - Projector backwards
BB - Black backwards
*/