Home AMXForums Archive Threads AMX Hardware AutoPatch Forum

Parsing an Autopatch Response String?

vegastechvegastech Junior MemberPosts: 369
I have the need to parse the string response from an Autopatch Matrix. My problem is that I am having a difficult time with the nature of how to run my string searches, since the outputs can be multiple, whereas the input is single. Here is what I have:
DATA_EVENT[dvAUTOPATCH]
{
	
	STRING:
	{
		
		LOCAL_VAR CHAR cInputRx[16]
		LOCAL_VAR CHAR cOutputRx[16]
		IF (FIND_STRING(DATA.TEXT,'T',1))  //If the T is found, a response was sent.
		{
			cInputRx = REMOVE_STRING(DATA.TEXT,'O',1)  //remove everything up to & icluding O
			cInputRx = REMOVE_STRING(cInputRx,'I',1)  //remove all but the input # and the O, which are at the end
			cInputRx = REMOVE_STRING(cInputRx, 'O',2)  //remove the O, leave the input #
			
			cOutputRx = LEFT_STRING(DATA.TEXT,(LENGTH_ARRAY(DATA.TEXT)))
			
			SEND_COMMAND dvTP,"'^TXT-59,0,Input ,',cInputRx,',to Output(s),',cOutputRx"
		}
	}
}
I was thinking about a FOR loop to populate an Array where each position in the array is an output position:
for(i=1;i<(LENGTH_ARRAY(cOutputRx));i++)
		{
			nOutputArray[i] = //I'm not sure where to go from here
		}
help. please. it's almost friday...somewhere.

Comments

  • vegastechvegastech Junior Member Posts: 369
    I ended up changing a few names around, but I found that my string arguments are my friends...although it would be nice if I could clean it up a bit!
    DATA_EVENT[dvAUTOPATCH]
    {
    	ONLINE:
    	{
    	//set to 
    	}
    	STRING:
    	{
    		
    		LOCAL_VAR CHAR cTemp[22]
    		LOCAL_VAR CHAR cInput[16]
    		LOCAL_VAR CHAR cOutput[16]
    		LOCAL_VAR CHAR cSwitcherString[22]
    		cSwitcherString = DATA.TEXT
    		IF (FIND_STRING(cSwitcherString,'T',1))
    		{
    			
    			cTemp = REMOVE_STRING(cSwitcherString,'I',1)  //remove all but the input # and the O
    			cInput = LEFT_STRING(cSwitcherString,1) 
    			cTemp = REMOVE_STRING(cSwitcherString,'O',1)
    			//send the cSwitcherString to the panel
    			cOutput = LEFT_STRING(cSwitcherString,1)
    			//cOutput = LEFT_STRING(cSwitcherString,(LENGTH_ARRAY(cSwitcherString)))
    			
    			
    			SEND_COMMAND dvTP,"'^TXT-59,0,Input ',cInput,' to Output ',cOutput"
    		}
    
    	}
    }
    
  • jjamesjjames AMX Sustaining Engineer Posts: 2,901
    String arguments are your friend indeed! String manipulation is probably one of my favorite things to do. (Smiling is also my favorite . . . ok - j/k)

    Let's say the incoming string is CL2I3O5T, in theory (I just woke up because I couldn't sleep, so my brain is a bit fuzzy . . . and this completely untested) this could be accomplished in just a few commands.

    I prefer to chip away at strings and avoid using LEFT, RIGHT and MID_STRINGS as they leave the original string intact, and it's just not as flexible since you're telling it to looking for only 'X' number of characters - I prefer that to instead look for things that are always present - in this case and 'I' and an 'O'. Let's pretend you have an 8x8 - your code would work fine. However, if you had an 18x18 - Autopatch does not return padded values (i.e. 01), so using LEFT/RIGHT/MID_STRING the way you have on an input value of 12 would return a '1' - definitely not what you're looking for.

    There's no rule or anything that says you can't use string functions within string functions, and if fact I find it quite helpful. For instance if you want to remove just one word or group of words, you could do this:
    // cXML = <somewhere><something>hello!</something><somewhere>
    // cNODE = 'something'
    cXML_TEMP = 
    	REMOVE_STRING(cXML,"'</',cNODE,'>'",FIND_STRING(cXML,"'<',cNODE,'>'",1))
    // cXML_TEMP = <something>hello!</something>
    


    Removing portions of the string is helpful in getting where you need to go. Here's what I'd do with a returning string (which is "CL2I3O5T") from the Autopatch.
    STRING:
    {
    	// FIND END OF ROUTE DATA
    	IF (FIND_STRING(DATA.TEXT,'T',1)) // T = TAKE
    	{
    		STACK_VAR INTEGER nLEVEL;
    		STACK_VAR INTEGER nINPUT;
    		STACK_VAR INTEGER nOUTPUT;
    		STACK_VAR CHAR    cBUFFER[12]
    		
    		// Remove string grabs data ENDING IN "T" starting at the position of "C"
    		// I've never tried this before, and it's all theory, but I'd assume this would
    		// ensure the first and full & proper string you are looking for in DATA.TEXT is grabbed
    		cBUFFER = REMOVE_STRING(DATA.TEXT,'T',FIND_STRING(DATA.TEXT,'C',1));
    		
    		// cBUFFER = CL2I3O5T
    		REMOVE_STRING(cBUFFER,'CL',1);
    		
    		// cBUFFER = 2I3O5T
    		// Removed portion will be '2I', so ATOI will grab the 2
    		nLEVEL = ATOI(REMOVE_STRING(cBUFFER,'I',1));
    		
    		// cBUFFER = 3O5T
    		// Removed portion will be '3O', so ATOI will grab the 3
    		nINPUT = ATOI(REMOVE_STRING(cBUFFER,'O',1));
    		
    		// cBUFFER = 5T
    		// ATOI will grab the 5
    		nOUTPUT= ATOI(cBUFFER);
    
    		// Do whatever you want with your values now.
    }		
    
    Hope this helps! And if I'm totally wrong - it'd be nice if someone showed me where I am in error . . . okay - back to bed!
  • kbeattyAMXkbeattyAMX Junior Member Posts: 358
    I think part of your question is how to store and use the information you've gathered. Create a 2 dimensional array, APswitcher[level][output]. Now that you have the LEVEL and OUTPUT, assign the current INPUT to it. APswitcher[level][output] = input. Now you can feedback something like this...

    [dvTP,Video_inputBTN1] = (APswitcher[1][currOUTputBTN] = 1)

    So now if you press an output button, the input button will light up according to what is actually at that output.
  • vegastechvegastech Junior Member Posts: 369
    Both replies are great - thanks! But what about the additional outputs portion of the string? Each output after the first one returns the output number followed by a space - would I continue with remove_string and look for the $20(space), and continue on my way?
    //Example: Input 1 to Outputs 1,3,5,7
    CL1I6O1 2 3 4 5 6 7 8T
    
    The outputs will constantly change...I suppose remove_string could continue to work as long as it finds a space, but how to I search for a space?
    Thanks.
  • jjamesjjames AMX Sustaining Engineer Posts: 2,901
    How about using AMX's SPLIT_STRING function (technote 662)?

    Also, i changed nINPUT to cINPUT.
    STACK_VAR CHAR    cLEVEL[2];
    STACK_VAR CHAR    cINPUT[2];
    STACK_VAR CHAR    cOUTPUT[18][2];	// Maximum number of outputs
    STACK_VAR CHAR    cBUFFER[12]
    
    // Remove string grabs data ENDING IN "T" starting at the position of "C"
    // I've never tried this before, and it's all theory, but I'd assume this would
    // ensure the first and full & proper string you are looking for in DATA.TEXT is grabbed
    cBUFFER = REMOVE_STRING(DATA.TEXT,'T',FIND_STRING(DATA.TEXT,'C',1));
    
    // cBUFFER = CL2I3O5 6 7 8 9T
    REMOVE_STRING(cBUFFER,'CL',1);
    
    // cBUFFER = 2I3O5 6 7 8 9T
    // Removed portion will be '2I', so ATOI will grab the 2
    cLEVEL = ITOA(ATOI(REMOVE_STRING(cBUFFER,'I',1)));
    
    // cBUFFER = 3O5 6 7 8 9T
    // Removed portion will be '3O', so ATOI will grab the 3
    cINPUT = ITOA(ATOI(REMOVE_STRING(cBUFFER,'O',1)));
    
    // cBUFFER = 5 6 7 8 9T
    // Look for spaces
    IF(FIND_STRING(cBUFFER,' ',1))
    {
    	// ATOI will grab the 5
    	SPLIT_STRING(cBUFFER,' ',cOUTPUT);
    	// cOUTPUT now holds all outputs 
    }
    ELSE
    {
    	// cBUFFER = 5T
    	cOUTPUT[1] = ITOA(ATOI(cBUFFER));
    }
    
    // Do what you want with your values
    

    Some other good functions from AMX:
    TN 659 - TRIM_STRING - a way to remove the spaces before or after characters in a string
    TN 660 - FIND_STRING_REV - a way to search for characters in a string starting at the end
    TN 661 - REPLACE_STRING - a way to replace specific characters, or remove specific characters, from a string
    TN 662 - SPLIT_STRING - a way to assign sub-strings separated by delimiters from a string to an array
    TN 933 - COUNT_STRING - a way to count the number of times a pattern of characters occurs in a string
  • kbeattyAMXkbeattyAMX Junior Member Posts: 358
    That function , SPLIT_STRING doesn't seem to be supported in the NetLinx.AXI. You'd have to copy the function out of the Tech Note and paste it into your program.
  • jjamesjjames AMX Sustaining Engineer Posts: 2,901
    kbeattyAMX wrote: »
    That function , SPLIT_STRING doesn't seem to be supported in the NetLinx.AXI. You'd have to copy the function out of the Tech Note and paste it into your program.

    Right. That is why I paste those functions into the Netlinx.axi - and then it's supported! ;)

    That is also why I included the TN number.
  • a_riot42a_riot42 AMX Wizard Posts: 1,619
    jjames wrote: »
    How about using AMX's SPLIT_STRING function (technote 662)?

    Just a warning, I found a bug in split_string that I found hard to believe wasn't tested for so I am not sure how heavily these functions were tested when they were conceived.
    Paul
  • jjamesjjames AMX Sustaining Engineer Posts: 2,901
    a_riot42 wrote: »
    Just a warning, I found a bug in split_string that I found hard to believe wasn't tested for so I am not sure how heavily these functions were tested when they were conceived.
    Paul

    Would you mind sharing that bug? :D
  • Joe HebertJoe Hebert Junior Member Posts: 2,157
    a_riot42 wrote: »
    Just a warning, I found a bug in split_string that I found hard to believe wasn't tested for so I am not sure how heavily these functions were tested when they were conceived.
    Paul
    What bug is that?

    I know that REPLACE_STRING (TN661) will spin you into an infinite loop if you try to replace one character with two or more of the same character. Oops.
Sign In or Register to comment.