getSymbols bug fix is not available on npm

[MarkusHardardt]

Hello Mister Musolino
When I do an update with npm I do receive version 1.4.3 of node-ads but unfortunately the getSymbols bugfix you did at 25 Sep 2018 is not contained. Could you please have a look at this.
Thanks for your help and another thanks for your library. It looks much better to me than the TcAdsWebService stuff from Beckhoff. Good job!
Best regards
Markus Hardardt

[roccomuso]

It wasn't released on npm, once #27 is merged we'll publish a new patch release.

[MarkusHardardt]

Hello Mister Musolino   Thanks for your information!   There is another thing you might be interessted in (when doing fixes anyway):   The following regex  var re = /ARRAY[\s]+\[([\-\d]+)\.\.([\-\d]+)\][\s]+of[\s]+(.*)/i located inside the function: var getSymbols = function (cb, raw) { ... } at line 604 in the latest github version of ads.js does not match for raw == false in case of multidimensional arrays (like ARRAY [0..X,0..Y, ...] OF Z).   I saw this accidentally when I did a textual diff of dumps calling this function with true or false (just to find out what is the difference). But in my case I'm gonna use the getSymbols function with raw == true, so this is not a problem for me.   Greetings Markus Hardardt     Gesendet: Sonntag, 10. März 2019 um 14:14 Uhr Von: "Rocco Musolino" <notifications@github.com> An: roccomuso/node-ads <node-ads@noreply.github.com> Cc: "Markus Hardardt" <markus.hardardt@gmx.ch>, Author <author@noreply.github.com> Betreff: Re: [roccomuso/node-ads] getSymbols bug fix is not available on npm (#26) It wasn't released on npm, once #27 is merged we'll publish a new patch release. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[PLCHome]

You are absolutely right. Since it never worked, I introduced the RAW feature.
Sorry, it was a quick hack.
You can correct it if you want.

[roccomuso]

@MarkusHardardt thanks!
@PLCHome added you on npm as mantainer for node-ads 👍 feel free to release new version

[PLCHome]

Published...

[MarkusHardardt]

var getSymbols = function (cb, raw) { var ads = this var cmdLength = { indexGroup: ADSIGRP.SYM_UPLOADINFO2, indexOffset: 0x00000000, bytelength: 0x30 } var cmdSymbols = { indexGroup: ADSIGRP.SYM_UPLOAD, indexOffset: 0x00000000 } readCommand.call(ads, cmdLength, function (err, result) { if (!err) { var data = result.readInt32LE(4) cmdSymbols.bytelength = data readCommand.call(ads, cmdSymbols, function (err, result) { var symbols = [] var initialPos = 0 if (!err) { while (initialPos < result.length) { var symbol = {} var pos = initialPos var readLength = result.readUInt32LE(pos) initialPos = initialPos + readLength symbol.indexGroup = result.readUInt32LE(pos + 4) symbol.indexOffset = result.readUInt32LE(pos + 8) symbol.size = result.readUInt32LE(pos + 12) // symbol.type = result.readUInt32LE(pos + 16) //ADST_ ... // symbol.something = result.readUInt32LE(pos + 20) var nameLength = result.readUInt16LE(pos + 24) + 1 var typeLength = result.readUInt16LE(pos + 26) + 1 var commentLength = result.readUInt16LE(pos + 28) + 1 pos = pos + 30 var nameBuf = Buffer.alloc(nameLength) result.copy(nameBuf, 0, pos, pos + nameLength) symbol.name = nameBuf.toString('binary', 0, findStringEnd(nameBuf, 0)) pos = pos + nameLength var typeBuf = Buffer.alloc(typeLength) result.copy(typeBuf, 0, pos, pos + typeLength) symbol.type = typeBuf.toString('binary', 0, findStringEnd(typeBuf, 0)) pos = pos + typeLength var commentBuf = Buffer.alloc(commentLength) result.copy(commentBuf, 0, pos, pos + commentLength) symbol.comment = commentBuf.toString('binary', 0, findStringEnd(commentBuf, 0)) pos = pos + commentLength symbols.push(symbol) // we additionally add symbols for each array element when not in raw-mode var arraytype = !raw ? parseArrayType(symbol.type) : false if (arraytype) { forEachArrayIndex(arraytype.range, function (indices) { var newSymbol = JSON.parse(JSON.stringify(symbol)) newSymbol.name += indices newSymbol.type = arraytype.type symbols.push(newSymbol) }) } } } cb.call(ads.adsClient, err, symbols) }) } else { cb.call(ads.adsClient, err) } }) } var parseArrayType = function (type) { var m = /^\s*ARRAY\s*\[\s*(\-?\d+\s*\.\.\s*\-?\d+(?:\s*,\s*\-?\d+\s*\.\.\s*\-?\d+)*)\s*\]\s*OF\s+(.+)\s*$/i.exec(type) if (m) { var range = [], r, rx = /\s*,?\s*(\-?\d+)\s*\.\.\s*(\-?\d+)\s*/g rx.lastIndex = 0 while ((r = rx.exec(m[1])) !== null) { range.push([parseInt(r[1]), parseInt(r[2])]) } return {type : m[2], range : range} } else { return false } } var forEachArrayIndex = function (range, cb) { var offset = arguments.length === 4 ? arguments[2] : 0 var indices = arguments.length === 4 ? arguments[3] : [] var start = range[offset][0], end = range[offset][1] for (var i = start; i <= end; i++) { indices.push(i) if (offset < range.length - 1) { forEachArrayIndex(range, cb, offset + 1, indices) } else { cb(JSON.stringify(indices)) } indices.pop() } }

[PLCHome]

Thanx.

I currently have less time. However, at first glance, it did not seem to me that the same result would be returned to one-dimensional arrays as earlier. This is important so that working code is not denied at one go

[MarkusHardardt]

Hi The difference is probably because of the missing "arrayid". I found no other reference to "arrayid" in ads.js and - on the other hand - had no idea how to build an integer based id for multidimensional array elements, so I just left it away. But no problem for me anyway, because for me "raw" mode is pretty good. So I can life with the unchanged version.     Gesendet: Sonntag, 17. März 2019 um 13:49 Uhr Von: "PLCHome" <notifications@github.com> An: roccomuso/node-ads <node-ads@noreply.github.com> Cc: "Markus Hardardt" <markus.hardardt@gmx.ch>, Mention <mention@noreply.github.com> Betreff: Re: [roccomuso/node-ads] getSymbols bug fix is not available on npm (#26) Thanx. I currently have less time. However, at first glance, it did not seem to me that the same result would be returned to one-dimensional arrays as earlier. This is important so that working code is not denied at one go — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.