Hi, I just started using your library, so far I like your design, but I run into this problem.
Example input (received from TCP socket):
{"data":[164,227,155,136],"dir":"rx"}{"data":[249,88,104,174],"dir":"rx"}{"data":[148,105,74,58],"dir":"rx"}
Code fragment:
string smsg((char*)buff, len);
if (debuglevel_&1) cout << "Raw data Str: " << smsg << endl;
json jmsg = json::parse(smsg);
Alternative code:
stringstream ss;
ss<<smsg;
while (! ss.eof()) {
json jmsg;
ss >> jmsg;
Output:
parse error - unexpected '{'; expected end of input
Expected result:
I would like to be able to parse multiple concatenated JSON strings.
A possible implementation could be if the result were an array of json objects. like ‘[{…},{…},{…}]’
This could be achieved by replacing ‘}{‘ with ‘},{‘ and inserting a ‘[‘ and a ‘]’ at the beginning and ending of the string. (My current workaround.) But this is not a very robust implementation, would need to replace all possible ‘}\r\n{‘ … variant, not to mention strings containing “}{”. Also not very efficient, needs to pseudo pre parse the input. (It would help somewhat if json could accept whitespace* separated objects in arrays not requiring comma, though that would not be valid JSON. This could be a relaxed parsing, instead of strict.)
Second possible implementation (preferred IMHO) for the parsing to be resumable. Meaning extract one JSON object from a stream, leave the read position and start from there the next time. Or in case if it’s a string provide a method to query how much characters were processed, so that part can be “removed” from the input string and the rest can be parsed again. (Like: string smsg ((char*)&buff[position], len-position); … position+=jmsg.??)
I have found these related issues:
#367
#210
The suggested workaround here (counting matching ‘{‘ ’}’ would not work if any string inside the JSON contained non matching ‘{‘,’}’ characters like "{"test3":"}"}").
Thank you for all your work and efforts.
Hi, I just started using your library, so far I like your design, but I run into this problem.
Example input (received from TCP socket):
Code fragment:
Alternative code:
Output:
Expected result:
I would like to be able to parse multiple concatenated JSON strings.
A possible implementation could be if the result were an array of json objects. like ‘[{…},{…},{…}]’
This could be achieved by replacing ‘}{‘ with ‘},{‘ and inserting a ‘[‘ and a ‘]’ at the beginning and ending of the string. (My current workaround.) But this is not a very robust implementation, would need to replace all possible ‘}\r\n{‘ … variant, not to mention strings containing “}{”. Also not very efficient, needs to pseudo pre parse the input. (It would help somewhat if json could accept whitespace* separated objects in arrays not requiring comma, though that would not be valid JSON. This could be a relaxed parsing, instead of strict.)
Second possible implementation (preferred IMHO) for the parsing to be resumable. Meaning extract one JSON object from a stream, leave the read position and start from there the next time. Or in case if it’s a string provide a method to query how much characters were processed, so that part can be “removed” from the input string and the rest can be parsed again. (Like:
string smsg ((char*)&buff[position], len-position); … position+=jmsg.??)I have found these related issues:
#367
#210
The suggested workaround here (counting matching ‘{‘ ’}’ would not work if any string inside the JSON contained non matching ‘{‘,’}’ characters like "{"test3":"}"}").
Thank you for all your work and efforts.