#include<stdio.h>

void keys(FILE* f, FILE* g)
{
  int endFlag = 0, keyFlag = 1, stringFlag = 0;
  char x;

  while(!feof(f) && endFlag == 0){
    x = getc(f);
    
    //if the first object closes 
    if(x == '}'){
      endFlag = 1;
    }
    else if(!feof(f)){
      //if we read the whole key
      if(x == ':'){
        keyFlag = 0;
      }
      //true means that a key will follow after ','
      else if(x == ','){
        keyFlag = 1;
        fprintf(g, ",");
      }
      //if we are at the beginning of the file
      else if(x == '[' || x == '{'){
        ;//do nothing
      }
      //keep track whether i am in a string or not
      else if(x == '"' && stringFlag == 0){
        stringFlag = 1;
      }
      else if(x == '"' && stringFlag == 1){
        stringFlag = 0;
      }
      //if the current element is not a newline or space
      else if(x != '\n' && x != ' '){
        //print the char if it could be part of a key
        if(x != '"' && keyFlag == 1){
          fprintf(g, "%c", x);
        }
      }
      //if the key contains spaces, print them
      else if(x == ' ' && stringFlag == 1 && keyFlag == 1){
        fprintf(g, " ");
      }
    }
  }
  //the comma at the end of the line
  fprintf(g, ",");
}

void CSV(FILE* f, FILE* g)
{
  int valueFlag = 0, endFlag = 0, objectFlag = 0, stringFlag = 0;
  char x;

  while(endFlag == 0){
    x = getc(f);

    //if i reached the end of the file
    if(x == ']'){
      endFlag = 1;
    }
    //if i am at the beginning of the file
    else if(x == '['){
      ;//do nothing
    }
    //if i am at the beginning of an object, start new line
    else if(x == '{'){
      objectFlag = 1;
      fprintf(g, "\n");
    }
    //if i am at the end of an object
    else if(x == '}'){
      ;//do nothing
    }
    //if i find a comma outside an object
    else if(x == ',' && objectFlag == 0){
      ;//do nothing
    }
    //IMPORTANT: some chars were negative (-30)
    else if(x > 0){
      //if true, a value will follow
      if(x == ':'){
        valueFlag = 1;
      }
      //keep track whether or not i am in a string
      else if(x == '"' && stringFlag == 1){
        stringFlag = 0;
      }
      else if(x == '"' && stringFlag == 0){
        stringFlag = 1;
      }
      //print the comma outside of a string
      else if(x == ',' && stringFlag == 0){
        valueFlag = 0;
        fprintf(g, ",");
      }
      //if not newline
      else if(x != '\n'){
        //if i find a space inside a string, print it
        if(x == ' ' && valueFlag == 1 && stringFlag == 1){
          fprintf(g, " ");
        }
        //if i find a character inside a string, print it
        else if(x != '"' && valueFlag == 1 && x != ' '){
          fprintf(g, "%c", x);
        }
      }
    }
  }

  fprintf(g, ",");
}

int main()
{
  //open the files
  FILE* f = fopen("convertor.in", "r");
  FILE* g = fopen("convertor.out", "w");
  
  //get the keys
  keys(f, g);

  //restart the position of the pointer in the file
  fseek(f, 0, SEEK_SET);

  //start getting the objects and teir values
  CSV(f, g);

  //close the files
  fclose(f);
  fclose(g);

  return 0;
}