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read_conf.c

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

int main (int argc, char *argv[])
{
  int     e, res, rc;
  char    *value;

  if (argc != 3)
  {
    fprintf (stdout, "FATAL: Wrong arguments (Usage: read_conf <path to configuration file> <tag>)");
    return 1;
  }

  rc = parse_configuration_file (argv[1], &e);
  if (rc != PARSE_CONFIGURATION_OK)
  {

    switch (rc)
    {
      case PARSE_CONFIGURATION_NO_MEM:
           {
              fprintf (stderr,
                       "FATAL: Could not load the configuration file <%s> - Could not allocate memory!",
                       argv[1]);
           }; break;
      case PARSE_CONFIGURATION_FILE_NOT_FOUND:
           {
              fprintf (stderr,
                       "FATAL :Could not load the configuration file <%s> - %s",
                       argv[1], strerror(e));
           }; break;
      case PARSE_CONFIGURATION_SYNTAX_ERROR:
           {
              fprintf (stderr,
                       "FATAL: Could not load the configuration file <%s> - Found syntax error.",
                       argv[1]);
           }; break;
      case PARSE_CONFIGURATION_DUPLICATED_TAG:
           {
              fprintf (stderr,
                       "FATAL: Could not load the configuration file <%s> - Duplicated tag found.",
                       argv[1]);
           }; break;
      case PARSE_CONFIGURATION_DLL_OPEN_ERROR:
           {
              fprintf (stderr,
                       "FATAL: Could not load the configuration file <%s> - Could not open DLL. %s.",
                       argv[1], conf_get_last_error());
           }; break;
      case PARSE_CONFIGURATION_DLL_INVALID:
           {
              fprintf (stderr,
                       "FATAL: Could not load the configuration file <%s> - DLL is not valid. %s.",
                       argv[1], conf_get_last_error());
           }; break;
      case PARSE_CONFIGURATION_MODEM_CONF_NOT_VALID:
           {
              fprintf (stderr,
                       "FATAL: Could not load the configuration file <%s> - Modem's configuration is not valid.",
                       argv[1]);
           }; break;
    }

    return 1;
  }

  res = get_value(argv[2], &value);

  if (res == 0)
  {
    fprintf (stdout, "FATAL: Tag <%s> not found in configuration file <%s>", argv[2], argv[1]);
    return  1;
  }

  if (res == -1)
  {
    fprintf (stdout, "FATAL: Unexpected error while parsing configuration file <%s> for tag <%s>",
             argv[1], argv[2]);
    return 1;
  }
  
  fprintf (stdout, "%s", value);

  return 0;
}

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