void read_grammar(char *filename)
{
char buffer[1000];
FILE *file;
init_lexicons();
if(GDEBUG) fprintf(stderr,"Initialised lexicons\n");
init_grammar();
if(GDEBUG) fprintf(stderr,"Initialised grammar\n");
strcpy(buffer,filename);
strcat(buffer,".nts");
file = fopen(buffer,"r");
read_nonterminals(file);
file = fopen(buffer,"r");
read_nonterminals2(file);
if(GDEBUG) fprintf(stderr,"Loaded non-terminals\n");
strcpy(buffer,filename);
strcat(buffer,".lexicon");
file = fopen(buffer,"r");
read_lexicon(file);
if(GDEBUG) fprintf(stderr,"Loaded lexicon\n");
strcpy(buffer,filename);
strcat(buffer,".grm");
file = fopen(buffer,"r");
read_grm(file);
if(GDEBUG) fprintf(stderr,"Loaded grammar\n");
}
int
main (int argc, char *argv[])
{
int sentence_cnt, new_seed, i, file_flag, sent_flag, seed_flag;
int handle;
new_seed = 4951;
sentence_cnt = 4;
file_flag = 0;
seed_flag = 0;
sent_flag = 0;
handle = STDOUT_FILENO;
for (i = 1; i < argc; i++)
{
if (strcmp (argv[1], "-h") == 0)
usage (0, NULL);
else if (strcmp (argv[i], "-s") == 0)
{
if (seed_flag++)
usage (-1, "Can't have more than one seed");
if (++i >= argc)
usage (-1, "Missing value for -s");
new_seed = atoi (argv[i]);
}
else if (strcmp (argv[i], "-n") == 0)
{
if (sent_flag++)
usage (-1, "Can't have more than one sentence option");
if (++i >= argc)
usage (-1, "Missing value for -n");
sentence_cnt = atoi (argv[i]);
if (sentence_cnt < 1)
usage (-1, "Must have at least one sentence");
}
else if (strcmp (argv[i], "-f") == 0)
{
if (file_flag++)
usage (-1, "Can't have more than one output file");
if (++i >= argc)
usage (-1, "Missing value for -f");
/* Because files have fixed length in the basic Pintos
file system, the 0 argument means that this option
will not be useful until project 4 is
implemented. */
create (argv[i], 0);
handle = open (argv[i]);
if (handle < 0)
{
printf ("%s: open failed\n", argv[i]);
return EXIT_FAILURE;
}
}
else
usage (-1, "Unrecognized flag");
}
init_grammar ();
random_init (new_seed);
hprintf (handle, "\n");
for (i = 0; i < sentence_cnt; i++)
{
hprintf (handle, "\n");
expand (0, daGrammar, daGLoc, handle);
hprintf (handle, "\n\n");
}
if (file_flag)
close (handle);
return EXIT_SUCCESS;
}
