ESPTerm web interface submodule, separated to make testing and development easier
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espterm-front-end/jssrc/term_upload.js

146 lines
3.6 KiB

/** File upload utility */
window.TermUpl = function (conn, input) {
let lines, // array of lines without newlines
line_i, // current line index
fuTout, // timeout handle for line sending
send_delay_ms, // delay between lines (ms)
nl_str, // newline string to use
curLine, // current line (when using fuOil)
inline_pos // Offset in line (for long lines)
// lines longer than this are split to chunks
// sending a super-ling string through the socket is not a good idea
const MAX_LINE_LEN = 128
function fuOpen () {
fuStatus('Ready...')
Modal.show('#fu_modal', onClose)
$('#fu_form').toggleClass('busy', false)
input.blockKeys(true)
}
function onClose () {
console.log('Upload modal closed.')
clearTimeout(fuTout)
line_i = 0
input.blockKeys(false)
}
function fuStatus (msg) {
qs('#fu_prog').textContent = msg
}
function fuSend () {
let v = qs('#fu_text').value
if (!v.length) {
fuClose()
return
}
lines = v.split('\n')
line_i = 0
inline_pos = 0 // offset in line
send_delay_ms = qs('#fu_delay').value
// sanitize - 0 causes overflows
if (send_delay_ms < 0) {
send_delay_ms = 0
qs('#fu_delay').value = send_delay_ms
}
nl_str = {
'CR': '\r',
'LF': '\n',
'CRLF': '\r\n'
}[qs('#fu_crlf').value]
$('#fu_form').toggleClass('busy', true)
fuStatus('Starting...')
fuSendLine()
}
function fuSendLine () {
if (!$('#fu_modal').hasClass('visible')) {
// Modal is closed, cancel
return
}
if (!conn.canSend()) {
// postpone
fuTout = setTimeout(fuSendLine, 1)
return
}
if (inline_pos === 0) {
curLine = lines[line_i++] + nl_str
}
let chunk
if ((curLine.length - inline_pos) <= MAX_LINE_LEN) {
chunk = curLine.substr(inline_pos, MAX_LINE_LEN)
inline_pos = 0
} else {
chunk = curLine.substr(inline_pos, MAX_LINE_LEN)
inline_pos += MAX_LINE_LEN
}
if (!input.sendString(chunk)) {
fuStatus('FAILED!')
return
}
let all = lines.length
fuStatus(line_i + ' / ' + all + ' (' + (Math.round((line_i / all) * 1000) / 10) + '%)')
if (lines.length > line_i || inline_pos > 0) {
fuTout = setTimeout(fuSendLine, send_delay_ms)
} else {
closeWhenReady()
}
}
function closeWhenReady () {
if (!conn.canSend()) {
// stuck in XOFF still, wait to process...
fuStatus('Waiting for Tx buffer...')
setTimeout(closeWhenReady, 100)
} else {
fuStatus('Done.')
// delay to show it
setTimeout(function () {
fuClose()
}, 100)
}
}
function fuClose () {
Modal.hide('#fu_modal')
}
return {
init: function () {
qs('#fu_file').addEventListener('change', function (evt) {
let reader = new FileReader()
let file = evt.target.files[0]
console.log('Selected file type: ' + file.type)
if (!file.type.match(/text\/.*|application\/(json|csv|.*xml.*|.*script.*)/)) {
// Deny load of blobs like img - can crash browser and will get corrupted anyway
if (!confirm('This does not look like a text file: ' + file.type + '\nReally load?')) {
qs('#fu_file').value = ''
return
}
}
reader.onload = function (e) {
const txt = e.target.result.replace(/[\r\n]+/, '\n')
qs('#fu_text').value = txt
}
console.log('Loading file...')
reader.readAsText(file)
}, false)
},
close: fuClose,
start: fuSend,
open: fuOpen
}
}