I have encountered a strange failure when this code runs on my NodeMCU 0.9 board. It is basically getting http code from an API in the following format:
<abbr title="klokken">kl</abbr> 11–12
In this case I want to isolate the 11 and 12 by first removing the first 42 characters which works perfectly fine and then replacing the – with --. When I open a sketch and paste this program in it it runs perfectly fine and returns 11--12 but when I save this program under a random name it is rebuilt and for some reason doesn't replace the characters properly it then returns 11–12.
I have tried to replace different parts of the string when it was rebuilt which worked fine but for some reason I can't seem to either find the index of nor replace the three strange characters.
http.begin(URL_time);
int httpCode = http.GET();
String timerange;
if(httpCode > 0){
timerange = http.getString();
timerange.remove(0,42);
timerange.replace("–", "--");
Serial.println(timerange);
Thus my question is if anyone knows how to work around this issue apart from not saving my code. Feel free to ask me to elaborate on my question when needed.
The string you're receiving is encoded in Windows Latin 1 (ISO 8859-1), and you're (probably) using UTF-8. What you need is to re-encode the string properly.
Related
I'm trying to print some RFID tags and retrieve their TIDs to store them in my system and know which tags have been printed. Right now I'm reading the TID and sending it back to my computer (connected via USB with the my ZT421 printer) with the following code:
^RFR,H,0,12,2^FN0^FS^FH_^HV0,24,,_0D_0A,L^FS
^RFW,H,2,12,1^FD17171999ABABABAAAAAAAAAB^FS
This is repeated for each tag that I'm printing. However, when printing 10 tags, I only get 9 TIDs. If after that I try to print 7 tags, I still get 9 TIDs. To be honest I'm a bit lost now, because even trying to use the code examples from the ZPL manual (I've tried the ^RI instruction also) it doesn't seem to work.
The communication with the printer is beeing done through Zebra Setup Utilities' direct communication tool.
I tried to retrieve each printed tag TID with:
^RFR,H,0,12,2^FN0^FS^FH_^HV0,24,,_0D_0A,L^FS
^RFW,H,2,12,1^FD17171999ABABABAAAAAAAAAB^FS
but I always get 9 TIDs.
I also tried getting the TID with the ZPL manual example for the ^RI command:
^XA
^FO20,120^A0N,60^FN0^FS
^RI0,,5^FS
^HV0,,Tag ID:^FS
^XZ
And I got absolutely nothing returned to the computer, just a mssage saying "Tag ID:" and no value shown.
I would really appreciate some help with this...
Thanks in advance!
I've fixed the issue, but I'm going to leave the solution here just in case someone else is facing the same problem.
I thought that maybe it wasn't a code issue, but something related to the computer-printer communication. It turned out to be the case. The Zebra Setup Utilities program has a button that says "options". If you click it, a new screen will open and there you can configure the seconds that the program will wait for the printer response (in this case through USB). By default it's set to 5, i changed this value to 100, which is the maximum. This meant that instead of just printing and retrieving the TIDs of 6-9 tags, now I can do it for about 100.
This is not amazing because in my case it implied creating 25 files for the 2500 tags I had to print and store the TIDs, however it's far better than before.
I have a string that is 928 characters that I am using to create a qr code for. The issue I am having is that, although the QR code scans fine on Iphone, android devices seem to struggle detect it. I believe this is due to the size of the QR code. I wanted to know if there was a way I could truncate that 928 character string to under 50 characters and then expand it when I use it after scanning the QR Code. Upon researching, I found many QR question and a lot of questions on how to shorten text, but nothing specifically relating to my question.
The QR HTML is:
<qrcode
[qrdata]="qrUrl"
[allowEmptyString]="true"
[attr.ariaLabel]="'QR Code image with the following content...'"
[cssClass]="'center'"
[colorDark]="'#000000ff'"
[colorLight]="'#ffffffff'"
[elementType]="'canvas'"
[errorCorrectionLevel]="'M'"
[attr.imageSrc]="currentUser.imageData ? currentUser.imageData : './assets/default-logo.png'"
[attr.imageHeight]="75"
[attr.imageWidth]="75"
[margin]="4"
[scale]="1"
[title]="'A custom title attribute'"
[width]="300"
></qrcode>
Changing the error correction to L fixed the issue.
Hi I am trying to upload data to the Heidi SQL table, but it returned "SQL Error (1366): Incorrect string value: '\xE3\x82\xA8\xE3\x83\xBC...'".
This issue is prompted by this string - "エーペックスレジェンズ" , and the source data file has a number of special characters. Want to know if there's a way to override this, so that all forms of character could be uploaded?
My default setting is utf8 and I have also tried utf8mb4, but neither of them would work.
That happens when you select the wrong file encoding in HeidiSQL's open-file dialog:
Never select "Auto-detect" - I wrote that auto-detection, and I can tell you it often detects the wrong encoding. Use the right encoding instead, which is mostly utf-8 nowadays.
So far I was parsing the NotesCalendarEntry ics manually and overwriting certain properties, and it worked fine. Today i stumbled upon a problem, where a long summary name of the appointment gets split into multiple lines, and my parsing goes wrong, it replaces the part up to the first line break and the old part is still there.
Here's how I do this "parsing":
NotesCalendarEntry calEntry = cal.getEntryByUNID(apptuid);
String iCalE = calEntry.read();
StringBuilder sb = new StringBuilder(iCalE);
int StartIndex = iCalE.indexOf("BEGIN:VEVENT"); // care only about vevent
tmpIndex = sb.indexOf("SUMMARY:") + 8;
LineBreakIndex = sb.indexOf(Character.toString('\n'), tmpIndex);
if(sb.charAt(LineBreakIndex-1) == '\r') // take \r\n into account if exists
LineBreakIndex--;
sb.delete(tmpIndex, LineBreakIndex); // delete old content
sb.insert(tmpIndex, subject); // put my new content
It works when line breaks are where they are supposed to be, but somehow with long summary name, line breaks are put into the summary (not literal \r\n characters, but real line breaks).
I split the iCalE string by \r\n and got this (only a part obviously):
SEQUENCE:6
ATTENDEE;ROLE=CHAIR;PARTSTAT=ACCEPTED;CN="test/Test";RSVP=FALSE:
mailto:test#test.test
ATTENDEE;CUTYPE=ROOM;ROLE=REQ-PARTICIPANT;PARTSTAT=ACCEPTED
;CN="Room 2/Test";RSVP=TRUE:mailto:room2#test.test
CLASS:PUBLIC
DESCRIPTION:Test description\n
SUMMARY:Very long name asdjkasjdklsjlasdjlasjljraoisjroiasjroiasjoriasoiruasoiruoai Mee
ting long name
LOCATION:Room 2/Test
ORGANIZER;CN="test/Test":mailto:test#test.test
Each line is one array element from iCalE.split("\\r\\n");. As you can see, the Summary field got split into 2 lines, and a space was added after the line break.
Now I have no idea how to parse this correctly, I thought about finding the index of next : instead of a new line break, and then finding the first line break before that : character, but that wouldn't work if the summary also contained a : after the injected line-break, and also wouldn't work on fields like that ORGANIZER;CN= as it doesn't use : but ;
I tried importing external ical4j jar into my xpage to overcome this problem, and while everything is recognized in Domino Designer it resulted in lots of NoClassDefFound exceptions after trying to reach my xpage service, despite the jars being in the build path and all.
java.lang.NoClassDefFoundError: net.fortuna.ical4j.data.CalendarBuilder
How can I safely parse this manually, or how can I properly import ical4j jar to my xpage? I just want to modify 3 fields, the DTSTART, DTEND and SUMMARY, with the dates I had no problems so far. Fields like Description are using literal \n string to mark new lines, it should be the same in other fields...
Update
So I have read more about iCalendar, and it seems that there is a standard for this called line folds, these are crlf line endings followed by a space. I made a while loop checking until the last line-break not followed by a space, and it works great so far. Will use this unless there's a better solution (ical4j is one, but I can't get it working with Domino)
I'm having trouble finding examples/troubleshooting tips online, and am not quite sure that I'm interpreting the documentation correctly. Any assistance would be greatly appreciated.
I'm connecting to an e-mail server, and want to read the e-mail subjects, and bodies. I first make my connection like so:
import imaplib
c = imaplib.IMAP4_SSL(hostname, port)
c.login(username, password)
foldername = 'INBOX/SSR'
c.select(str.encode(foldername), readonly = True)
today = datetime.date.today().strftime('%d-%b-%Y')
searchcriteria = '(SENTON '{}')'.format(today)
typ, msg_ids = c.search(None, searchcriteria)
msg_ids = [s.decode('ascii') for s in msg_ids]
for idnumber in msg_ids:
print(c.fetch(idnumber, "(BODY.PEEK[HEADER])"))
The code and works and output looks as expected, up until the last line, at which point, I get
imaplib.error: FETCH command error: BAD [b' Command Argument Error. 12']
My line of thought, and subsequent testing examined the following possible issues:
bytes vs. string. I converted input back to bytes, but the error remained constant
improper syntax: I tried other commands, such as BODY, SUBJECT, and ENVELOPE but still got the same message.
I'm not sure how to interpret the error, and don't really know where to start. Referencing https://www.rfc-editor.org/rfc/rfc3501.html from pp. 102+, I noticed that the values are labeled differently, but don't understand what the issue is with my implementation. How should I interpret the error? What is wrong with my syntax?
P.S. Correct me if I'm wrong, but the c.search shouldn't change my directory, yes? As in, by selecting foldername, I "navigate" to the selected folder, but just searching only returns values and shouldn't change my location?
I encountered the same problem while I tried to list or select a new mailbox - BAD [b' Command Argument Error. 12'], in my case, it didn't work with “Sent Box”, but it worked well with “Outbox”, so the space symbol is the point.
So it worked with c.select('"{}"'.format("Sent Box")...
Hope this information could help you.
Your last line is not correct msg_ids = [s.decode('ascii') for s in msg_ids]
msg_ids is a list with bytes string, not with elements of a list - example: [b'123 124 125']
Change the last line into msg_ids = msg_ids[0].split(b' ') and it will work as expected.