newLISP Fan Club

Ok roger that, rrq.

I did not realize the interactive mode would display differently.

And thanks for the println tip, makes it much prettier.

Thanks again for clarification and detailed explanation!

Much appreciated.

Yes it can be a bit confusing. The string returned by replace does have single-quotes replaced by double-quotes, but the interactive result output presents the double-quotes prefixed by backslash.

Thus, when the string has a double quote, the result printing of that string shows \" so as to indicated that the double-quote is not ending the string. Likewise, the result printing adds the double-quotes before and after printing the string content, and those double-quotes are not characters in the string.

If you make it be
(print (replace ....))then the string will be printed without extras before double-quotes, but the interactive output coming after will still show the string with that meta-character wrapping.

In short, a string of a single double-quote characters is written "\"", and it will be taken as such if input and printed as such by the interactive output. The print function doesn't add meta-characters. Here's an illustration example:
> (println "\"")
"
"\""
>The first line is what the println function prints (which is the "raw" string content with a newline added at end), and the second line is the interactive output of the value returned by the println function (the same string but with meta-characters to make it be the character sequence the input reader would need).

Side note, I managed to get a json output from the python file, which feeds nicely into
json-parse.

Of course, I am still curious how I should correctly swap the ' for a " in the
replace function.

Thanks Ralph,

I am using this to get data from a python script:

(set 'a (exec "python3 go.py"))
So when it arrives to my nL script, it is a string inside of a list.

With your suggestion, I managed to get it to the string with this:

(set 'b (a 0))
and can then run this:

(replace "\'" b "\"")
Which returns this:

"{\"symbol\": \"BURT/USDT\", \"timestamp\": None, \"datetime\": None, \"high\": 0.002463, \"low\": 0.001605, \"bid\": None, \"bidVolume\": 1731397.09898224, \"ask\": None, \"askVolume\": 2732456.21823022, \"vwap\": None, \"open\": 0.002136, \"close\": 0.002051, \"last\": 0.002051, \"previousClose\": None, \"change\": -8.5e-05, \"percentage\": -3.9794007490636703, \"average\": 0.002093, \"baseVolume\": 10255192.67905658, \"quoteVolume\": None, \"markPrice\": None, \"indexPrice\": None, \"info\": {\"close\": \"0.002051\", \"high\": \"0.002463\", \"last\": \"0.002051\", \"low\": \"0.001605\", \"market\": \"BURTUSDT\", \"open\": \"0.002136\", \"period\": \"86400\", \"value\": \"21214.1562025586145\", \"volume\": \"10255192.67905658\", \"volume_buy\": \"1731397.09898224\", \"volume_sell\": \"2732456.21823022\"}}"
Is there an way to keep the "\" from appearing, as I was trying to escape the middle " ?

Much appreciated again!

Fun

May I also suggest that you lift out the command key dispatch as a key-action association list between key and action. Eg

(setf ACTIONS '(
    (87 up)    (119 up)
    (65 left)  (97  left)
    (85 down)  (115 down)
    (68 right) (100 right)
    (48 exit) ; "0" --> quit the game
))
The "case" statement would be replaced by something like the following "if" statement:

(if (lookup (setf key (read-key)) ACTIONS) (apply $it)
    (println "Wrong key.") (setq key-error true))
That would open it up slightly for easier change of command keys.

So 'a gets set to a list of a string ? Did you mean to set it to the string rather? like
(set 'a "{'symbol': 'BURT/USDT', ... 'markPrice': None}")

Hi and thanks for guidance!

I am trying to format this into valid json so I can json-parse it:

("{'symbol': 'BURT/USDT', 'timestamp': 1731440509530, 'datetime': '2024-11-12T19:41:49.530Z', 'high': 0.00353408, 'low': 0.00208606, 'bid': None, 'bidVolume': None, 'ask': None, 'askVolume': None, 'vwap': None, 'open': 0.00303488, 'close': 0.00246695, 'last': 0.00246695, 'previousClose': None, 'change': -0.00056793, 'percentage': -18.71, 'average': 0.00275091, 'baseVolume': None, 'quoteVolume': 281487.40662491, 'info': {'s': 'burt_usdt', 't': '1731440509530', 'cv': '-0.00056793', 'cr': '-0.1871', 'o': '0.00303488', 'l': '0.00208606', 'h': '0.00353408', 'c': '0.00246695', 'q': '97965253', 'v': '281487.40662491'}, 'indexPrice': None, 'markPrice': None}")
From what I understand, I have to change the single quotes to double quotes and change None to null, in order for it to be valid json, below, which validates as correct json:

{"symbol": "BURT/USDT", "timestamp": 1731440509530, "datetime": "2024-11-12T19:41:49.530Z", "high": 0.00353408, "low": 0.00208606, "bid": null, "bidVolume": null, "ask": null, "askVolume": null, "vwap": null, "open": 0.00303488, "close": 0.00246695, "last": 0.00246695, "previousClose": null, "change": -0.00056793, "percentage": -18.71, "average": 0.00275091, "baseVolume": null, "quoteVolume": 281487.40662491, "info": {"s": "burt_usdt", "t": "1731440509530", "cv": "-0.00056793", "cr": "-0.1871", "o": "0.00303488", "l": "0.00208606", "h": "0.00353408", "c": "0.00246695", "q": "97965253", "v": "281487.40662491"}, "indexPrice": null, "markPrice": null}
Here is what I tried:

(set 'a '("{'symbol': 'BURT/USDT', 'timestamp': 1731439797068, 'datetime': '2024-11-12T19:29:57.068Z', 'high': 0.00353408, 'low': 0.00208606, 'bid': None, 'bidVolume': None, 'ask': None, 'askVolume': None, 'vwap': None, 'open': 0.00294771, 'close': 0.00248834, 'last': 0.00248834, 'previousClose': None, 'change': -0.00045937, 'percentage': -15.58, 'average': 0.00271802, 'baseVolume': None, 'quoteVolume': 281817.75855221, 'info': {'s': 'burt_usdt', 't': '1731439797068', 'cv': '-0.00045937', 'cr': '-0.1558', 'o': '0.00294771', 'l': '0.00208606', 'h': '0.00353408', 'c': '0.00248834', 'q': '97998750', 'v': '281817.75855221'}, 'indexPrice': None, 'markPrice': None}"))

(replace "\'" a "\"")  ; gave the below with no changes

("{'symbol': 'BURT/USDT', 'timestamp': 1731439797068, 'datetime': '2024-11-12T19:29:57.068Z', 'high': 0.00353408, 'low': 0.00208606, 'bid': None, 'bidVolume': None, 'ask': None, 'askVolume': None, 'vwap': None, 'open': 0.00294771, 'close': 0.00248834, 'last': 0.00248834, 'previousClose': None, 'change': -0.00045937, 'percentage': -15.58, 'average': 0.00271802, 'baseVolume': None, 'quoteVolume': 281817.75855221, 'info': {'s': 'burt_usdt', 't': '1731439797068', 'cv': '-0.00045937', 'cr': '-0.1558', 'o': '0.00294771', 'l': '0.00208606', 'h': '0.00353408', 'c': '0.00248834', 'q': '97998750', 'v': '281817.75855221'}, 'indexPrice': None, 'markPrice': None}")
Do I need to use regex for this or what would be the best approach to take? Thanks very much!

Gotcha,

Thanks for jogging the memory.

https://newlispfanclub.com/index.php?topic=4862.0

I will attempt to piece this together, much appreciated!

--jj

Wouldn't you need to use crypto:hmac ?

Hi there,

I am looking to follow step 2 of the api hmac authentication where it generates a signature from the string of GET + urlbody + timestamp, as indicated here:

https://docs.coinex.com/api/v2/authorization

As I understand it, the string to encrypt should look like this:

GET/assets/spot/balance1729963117000

which hashes to this:

ea68fa414dd208129b72ee5f4dcf34fd4b2a2c83121616da3f4cca454bd8d6e6

I am constructing the string with similar code to this:

(set 'timestamp (date-value (now)))
(set 'timestamp (push "000" (string timestamp) -1))  ; convert timestamp to milliseconds
(set 'user "xxx")

(set 'urlbase "https://api.coinex.com/v2")
(set 'urlendpoint "/assets/spot/balance")

(set 'urlbody (string "GET" urlendpoint timestamp))
(set 'urlbodyhash (crypto:sha256 urlbody))
(set 'url (string urlbase urlendpoint))

(set 'call (string "curl -X 'GET' " url " -H 'Content-type: application/json' -H 'X-COINEX-KEY: " user "' -H 'X-COINEX-SIGN: " urlbodyhash "' -H 'X-COINEX-TIMESTAMP: " timestamp "'"))
And the formatted curl request looks like this:

curl -X 'GET' https://api.coinex.com/v2/assets/spot/balance -H 'Content-type: application/json' -H 'X-COINEX-KEY: xxx' -H 'X-COINEX-SIGN: ea68fa414dd208129b72ee5f4dcf34fd4b2a2c83121616da3f4cca454bd8d6e6' -H 'X-COINEX-TIMESTAMP: 1729963117000'

When this is submitted to the api, I get this response:

("{\"code\":25,\"data\":{},\"message\":\"Signature Incorrect\"}")
This is how the docs suggest to construct the string (in python I believe):

prepared_str = "GET"+"/v2/spot/balance"+"1700490703564"
Have I generated the string correctly? or any thought to why the signature fails?

Thanks very much in advance for any tips! :+)

And this is the python example signature generation:

https://github.com/coinexcom/coinex_api_demo/blob/feat-api-v2/python/api.py