Different results on each system using file functions in C. Linux vs. Mac -
i writing file parsing program parse data. however, needs run natively on mac os machine. however, while code run fine on both ubuntu 14.04 , mac 10.10. mac machine give garbage data, sometimes. using gcc on linux gives correct data time.
the source data follows,
[6/30/2015 11:20:09 pm] stream begin [6/30/2015 11:20:09 pm] 00-00-ff-70-fc-a9-01-ec-ff-6c-fc-cc-01-fb-ff-70-fc-d4-01-fb [6/30/2015 11:20:09 pm] 00-01-ff-74-fc-c8-02-0b-ff-68-fc-b5-01-ff-ff-70-fc-b5-02-03 [6/30/2015 11:20:09 pm] 00-02-ff-6c-fc-b9-02-03-ff-6c-fc-d0-02-17-ff-64-fc-c4-01-f4 [6/30/2015 11:20:10 pm] 00-03-ff-68-fc-c4-01-ff-ff-59-fc-c8-01-ec-ff-5c-fc-e0-02-1b [6/30/2015 11:20:10 pm] 00-04-ff-5c-fc-dc-02-22-ff-5c-fc-d4-02-1e-ff-59-fc-c4-02-17 [6/30/2015 11:20:10 pm] 00-05-ff-60-fc-c4-02-13-ff-60-fc-c8-02-1b-ff-5c-fc-d0-02-1e [6/30/2015 11:20:10 pm] 00-06-ff-68-fc-d4-02-1e-ff-68-fc-c0-02-22-ff-60-fc-c4-02-0f [6/30/2015 11:20:10 pm] 00-07-ff-5c-fc-d0-02-03-ff-64-fc-b1-02-13-ff-59-fc-bd-01-ff the desired output follows. first number sample number determined line number. each source line contains 3 output lines. each number represented 4 hexadecimal characters.
1,-144,-855,492 2,-148,-820,507 3,-144,-812,507 4,-140,-824,523 5,-152,-843,511 6,-144,-843,515 7,-148,-839,515 8,-148,-816,535 9,-156,-828,500 10,-152,-828,511 11,-167,-824,492 12,-164,-800,539 13,-164,-804,546 14,-164,-812,542 15,-167,-828,535 16,-160,-828,531 17,-160,-824,539 18,-164,-816,542 19,-152,-812,542 20,-152,-832,546 21,-160,-828,527 22,-164,-816,515 23,-156,-847,531 however, on mac, it's processing follows.
1,-144,-855,492 2,-2368,-13114,507 3,-2293,-812,507 4,-140,-824,523 5,-2432,-13482,511 6,-2293,-843,515 7,-148,-839,515 8,-2368,-13050,535 9,-2485,-828,500 10,-152,-828,511 11,-2672,-13178,492 12,-2613,-800,539 13,-164,-804,546 14,-2624,-12986,542 15,-2661,-828,535 16,-160,-828,531 17,-2560,-13178,539 18,-2613,-816,542 19,-152,-812,542 20,-2432,-13306,546 21,-2549,-828,527 22,-164,-816,515 23,-2496,-13546,531 24,-2661,-835,511 i have tried compiling using clang, , gcc. tried using c99. using xcode compile can work, if move source folder breaks again.
code source following:
#include <stdio.h> #include <stdlib.h> #include <ctype.h> #include <fcntl.h> #include <errno.h> #include <unistd.h> #include <string.h> static short readhexnumber(char * inputstring); static void processfile(file * inputfile); //main function int main (int argc, char **argv) { char c; char *input = argv[1]; file *input_file, *output_file; char defaultout[] = "output000.csv"; char filenumber = 0; char *filenumberstring; filenumberstring = defaultout + 6; input_file = fopen(input, "r"); output_file = fopen(defaultout, "w"); if (input_file == 0 || output_file == 0) { //fopen returns 0, null pointer, on failure perror("canot open file!!!\n"); exit(-1); } else { processfile(input_file); char currentline[100]; while (fgets(currentline,100,input_file)) { unsigned short linenumber; short xnumber; short ynumber; short znumber; char isnewfile = 0; char i; for(i = 0; < 100; i++){ if(currentline[i] == '\0'){ ///found end of string break; } } if(i < 60){ ///line short, assume it's new stream filenumber+=1; char tempnumberstring[4] = "000"; sprintf(tempnumberstring, "%03d",filenumber); filenumberstring[0] = tempnumberstring[0]; filenumberstring[1] = tempnumberstring[1]; filenumberstring[2] = tempnumberstring[2]; fclose(output_file); output_file = fopen(defaultout, "w"); if(output_file == '\0'){ //fopen returns 0, null pointer, on failure perror("canot open file!!!\n"); exit(-1); } continue; } for(i = 0; < 100; ++){ c = currentline[i]; if(c == 0){ ///reached end of line break; } if(c == ']'){ ///found end of header i+=2; break; } } linenumber = (unsigned short)readhexnumber(currentline + i); += 6; char j; for(j = 0; j < 3; j++){ xnumber = readhexnumber(currentline + + (18 * j)); ynumber = readhexnumber(currentline + + (18 * j) + 6 ); znumber = readhexnumber(currentline + + (18 * j) + 12); fprintf(output_file,"%d,%d,%d,%d\n",3*linenumber + j + 1, xnumber,ynumber,znumber); } } } fclose(input_file); remove("interimfile"); return 0; } static void processfile(file * inputfile){ char * medianfile = "interimfile"; file * interimfile; interimfile = fopen(medianfile,"w"); char c; while((c = fgetc(inputfile)) != eof){ if(c == '\r'){ ///if our character carriage return. check next character if((c = fgetc(inputfile)) == '\n'){ ///if it's new line, eat carriage return character fputc(c,interimfile); }else{ ///if next character isn't newline character, make fputc('\n',interimfile); fputc(c,interimfile); } }else{ ///put character next file fputc(c,interimfile); } } fclose(interimfile); fclose(inputfile); inputfile = fopen(medianfile, "r"); } static short readhexnumber(char * inputstring){ char numberstring[4] = "0000"; numberstring[0] = inputstring[0]; //get msb numberstring[1] = inputstring[1];//get next byte numberstring[2] = inputstring[3]; //get next byte numberstring[3] = inputstring[4];//get lsb short number = (short)strtol(numberstring, null, 16); return number; }
there 4 bytes allocated numbersring. knows character follows last one. there possibility looks digit. make numberstring[5] , initialize numberstring[4] = 0, tell strtol stop.
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