text: /* Same as test_decode1 but reads from stdin directly.
   */
  
  #include <stdio.h>
  #include <pb_decode.h>
  #include "person.pb.h"
  #include "test_helpers.h"
  
  /* This function is called once from main(), it handles
     the decoding and printing.
     Ugly copy-paste from test_decode1.c. */
  bool print_person(pb_istream_t *stream)
  {
      int i;
      Person person;
      
      if (!pb_decode(stream, Person_fields, &person))
          return false;
      
      /* Now the decoding is done, rest is just to print stuff out. */
  
      printf("name: \"%s\"\n", person.name);
      printf("id: %ld\n", (long)person.id);
      
      if (person.has_email)
          printf("email: \"%s\"\n", person.email);
      
      for (i = 0; i < person.phone_count; i++)
      {
          Person_PhoneNumber *phone = &person.phone[i];
          printf("phone {\n");
          printf("  number: \"%s\"\n", phone->number);
          
          if (phone->has_type)
          {
              switch (phone->type)
              {
                  case Person_PhoneType_WORK:
                      printf("  type: WORK\n");
                      break;
                  
                  case Person_PhoneType_HOME:
                      printf("  type: HOME\n");
                      break;
                  
                  case Person_PhoneType_MOBILE:
                      printf("  type: MOBILE\n");
                      break;
              }
          }
          printf("}\n");
      }
      
      return true;
  }
  
  /* This binds the pb_istream_t to stdin */
  bool callback(pb_istream_t *stream, uint8_t *buf, size_t count)
  {
      FILE *file = (FILE*)stream->state;
      bool status;
      
      status = (fread(buf, 1, count, file) == count);
      
      if (feof(file))
          stream->bytes_left = 0;
      
      return status;
  }
  
  int main()
  {
      pb_istream_t stream = {&callback, NULL, SIZE_MAX};
      stream.state = stdin;
      SET_BINARY_MODE(stdin);
  
      if (!print_person(&stream))
      {
          printf("Parsing failed: %s\n", PB_GET_ERROR(&stream));
          return 1;
      } else {
          return 0;
      }
  }
  