tickeParsing.c, C (gcc)

tickeParsing.c

//gcc 5.4.0

#include  <stdio.h>
#include <string.h>

#define AUTO_SERVICIO 0
#define HORA_FECHA 1
#define DURACION 2
#define LITROS 3
#define KILOS 4
#define PRECIO_U 5
#define SUBTOTAL 6
#define IVA 7
#define TOTAL 8
#define TEXTO 9

char dataLine[120];                  //Every line of text of the ticket
int i;                              //Holds position in previous array to store valid received char
int updating = 0;                   //It is true once the GRUPO tag has been received, false once the PLANTA tag has been received.
int status = 0;
char ticket[60];
char temp[200];

unsigned char command[5];
unsigned char commandSize=0;
unsigned char previousChar;

void makeStream(char *dataStream)
{
    unsigned char line [50];
    
    scanf("%s", line);
    while(strcmp(line, "xxx") != 0){
        //printf("%s\n", line);
        strcat(dataStream, line);
        scanf("%s", line);
    }
//    printf("%s\n", dataStream);
}

////////////////////////////////////////////////////////////////////////////

int findSubString(char *line, char *data){
    int result = 0;
    
    for (char *p = strtok(line," "); p != NULL; p = strtok(NULL, " "))
    {
        if( strcmp(data, p) == 0 )
            result++;
    }
    return result;
}

int checkStart(char *line){
    //Look for "group" substring in the given line string
    return findSubString(line, "GRUPO");
}

int checkEnd(char *line){
    return findSubString(line, "PLANTA");
}

int fillAutoServicio(char *line){
    int result = 0;
 
    /*
    for (char *p = strtok(line," "); p != NULL; p = strtok(NULL, " ")){
        result++;
        puts(p);
    }*/
    char *p = strtok(line," ");
    if( strcmp(p, "#AUTO:") == 0 ){
            p = strtok(NULL, " ");
            strcat(ticket, "\"AUTO\":");
            strcat(ticket, p);
            strcat(ticket, ",");
            p = strtok(NULL, " ");
            p = strtok(NULL, " ");
            strcat(ticket, "\"SERVICIO\":");
            strcat(ticket, p);
            strcat(ticket, ",");
            result = 1;
    }
    return result;
}

int fillHoraFecha(char *line){
    int result = 0;
    /*
    for (char *p = strtok(line," :"); p != NULL; p = strtok(NULL, " :"))
        puts(p);*/
    
    char *p = strtok(line," :");
    if( strcmp(p, "HORA") == 0 ){
            strcat(ticket, "\"HORA\":\"");     //"HORA":"
        
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, "/");               //HOURS/
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, "/");               //MIN/
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, "\",");               //SEC",
        
            
            strcat(ticket, "\"FECHA\":\"");    //"FECHA":"
            p = strtok(NULL, " :");
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, "\",");              //MM/DD/YY",
            result = 1;
    }
    
    return result;
}

int fillDuracion(char *line){
    int result = 0;
    char *p = strtok(line," :");
    if( strcmp(p, "DURACION") == 0 ){
            strcat(ticket, "\"DURACION\":\"");     //"DURACION":"
        
            p = strtok(NULL, " :");    //SRV   NOT USED
            
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, "/");               //HOURS/
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, "/");               //MIN/
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, "\",");               //SEC",
            result = 1;
    }
    return result;
}

int fillLitros(char *line){
    int result = 0;
    char *p = strtok(line," :");
    if( strcmp(p, "LITROS") == 0 ){
            strcat(ticket, "\"LITROS\":");     //"LITROS":
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, ",");               //nnn,
            result = 1;
    }
    return result;
}

int fillKilos(char *line){
    int result = 0;
    char *p = strtok(line," :");
    if( strcmp(p, "KILOS") == 0 ){
            strcat(ticket, "\"KILOS\":");     //"KILOS":
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, ",");               //nnn,
            result = 1;
    }
    return result;
}

int fillPrecioU(char *line){
    int result = 0;
    char *p = strtok(line," :");
    if( strcmp(p, "PRECIO") == 0 ){
            strcat(ticket, "\"PRECIO_UNIT\":");     //"PRECIO_UNIT":
            p = strtok(NULL, " :");                 //UNIT not used
            p = strtok(NULL, " :");
            strcat(ticket, p);
            strcat(ticket, ",");               //nnn.nn,
            result = 1;
    }
    return result;
}

int fillSubTotal(char *line){
    int result = 0;
    char *p = strtok(line," $");
    if( strcmp(p, "SUBTOTAL") == 0 ){
            strcat(ticket, "\"SUBTOTAL\":");     //"SUBTOTAL":
            p = strtok(NULL, " $");
            strcat(ticket, p);
            strcat(ticket, ",");               //nnn.nn,
            result = 1;
    }
    return result;
}

int fillIVA(char *line){
    int result = 0;
    char *p = strtok(line," $");
    if( strcmp(p, "16.0%") == 0 ){
            strcat(ticket, "\"IVA\":");     //"IVA":
            p = strtok(NULL, " $");
            p = strtok(NULL, " $");
            strcat(ticket, p);
            strcat(ticket, ",");               //nnn.nn,
            result = 1;
    }
    return result;
}

int fillTotal(char *line){
    int result = 0;
    char *p = strtok(line," :$");
    if( strcmp(p, "TOTAL") == 0 ){
            strcat(ticket, "\"TOTAL\":");     //"TOTAL":
            p = strtok(NULL, " :$");
            strcat(ticket, p);
            strcat(ticket, ",");               //nnn.nn,
            result = 1;
    }
    return result;
}

int fillTicketString(char *line, int status){
    int result = 0;
    switch(status){
        case AUTO_SERVICIO: result = fillAutoServicio(line); break;
        case HORA_FECHA: result = fillHoraFecha(line); break;
        case DURACION: result = fillDuracion(line); break;
        case LITROS: result = fillLitros(line); break;
        case KILOS: result = fillKilos(line); break;
        case PRECIO_U: result = fillPrecioU(line); break;
        case SUBTOTAL: result = fillSubTotal(line); break;
        case IVA: result = fillIVA(line); break;
        case TOTAL: //result = fillTotal(line); break;
        case TEXTO:              //NOT USED
        default: break;
    }
    return result;
}

void receiveChar(unsigned char dataByte){
    //if we are receiving just command bytes
    if( commandSize > 0 ){
        if( command[0] == 0x1b ){
            if( dataByte = 0x21 ){
                commandSize ++;
                command[0]=0;
            }
        }
        commandSize --;
    }
    else{
        if( dataByte == 0x1b ){
            commandSize = 1;
            command[0] = 0x1b;
        }
        else{
            if( dataByte == 0x1d){
                commandSize = 2;
            }
            else{
                if( dataByte >=20 && dataByte < 127 ){
                    //printf("%c", dataByte);
                    dataLine[i] = dataByte;
                    i++;
                }
                else
                {
                    if( dataByte == 5){         //EOT: End of Transmission
                        //printf("EOT");
                        dataLine[i] = '\0';
                        strcpy(temp, dataLine);
                        i=0;
                        if( updating == 0){
                            if( checkStart(temp) != 0 ){
                                updating = 1;
                                strcpy(ticket, "{");
                                status = AUTO_SERVICIO;
                            }
                        }
                        else{
                            if( checkEnd(temp) == 0 ){              //Ticket printing has not finished
                                //Fill JSON ticket string
                                strcpy(temp, dataLine);
                                if( fillTicketString(temp, status) == 1){
                                    status++;
                                }
                            }
                            else{
                                //Ticket is ready
                                updating = 0;               //wait for next ticket start
                                //Send ticket through BlueTooth channel
                                //strcat(ticket, "}");
                                puts(ticket);
                                //Send over BT
                                
                            }
                        }
                        
                    }
                }
                //previousChar = dataByte;
            }
        }
         
    } 
}

unsigned char atohex(unsigned char asciiByte){
    if( (asciiByte >= '0') && ( asciiByte <= '9') )
        asciiByte -= 0x30;
    else{
        if( (asciiByte >= 'A') && ( asciiByte <= 'F') )
        asciiByte -= 0x37;
    }
    return asciiByte;
}

void sendDataStream(unsigned char *rawData){
    unsigned char highByte, lowByte, dataByte;
    
    while( *rawData != '\0' ){
        highByte = *rawData;
        rawData++;
        lowByte = *rawData;
       
        dataByte = (atohex(highByte) << 4) | (atohex(lowByte));
        receiveChar(dataByte);
        rawData++;
    }
}

int main(void)
{
    //unsigned char *dataFile;
    unsigned char dataStream[14000];
    
    //printf("Hello, world!\n");
    makeStream(dataStream);
    i=0;
    sendDataStream(dataStream);
    
    return 0;
}


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