count_lines_in_ASCII_file.h

// The following line is just to make sure this file is not included twice in the code
#ifndef VAST_COUNT_LINES_IN_ASCII_FILE_INCLUDE_FILE

#define FILENAME_LENGTH 1024   // Max. image filename length
#define MAX_LOG_STR_LENGTH 1024 + FILENAME_LENGTH

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

static size_t count_lines_in_ASCII_file(char *asciifilename) {
 FILE *file;
 size_t linecounter= 0;
 char buf[MAX_LOG_STR_LENGTH];
 if( strlen(asciifilename) < 2 )
  return 0;
 if( strlen(asciifilename) > FILENAME_LENGTH )
  return 0;
 file= fopen(asciifilename, "r");
 if( NULL == file )
  return 0;
 while( NULL != fgets(buf, MAX_LOG_STR_LENGTH, file) ) {
  linecounter++;
 }
 fclose(file);
 return linecounter;
}

// The macro below will tell the pre-processor that limits.h is already included
#define VAST_COUNT_LINES_IN_ASCII_FILE_INCLUDE_FILE

#endif
// VAST_COUNT_LINES_IN_ASCII_FILE_INCLUDE_FILE