fst-lattice.C
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/*******************************************************************/
/* */
/* FILE fst-lattice.C */
/* MODULE fst-lattice */
/* PROGRAM SFST */
/* AUTHOR Helmut Schmid, IMS, University of Stuttgart */
/* */
/*******************************************************************/
#include "fst.h"
using std::cerr;
using std::cout;
const int BUFFER_SIZE=1000;
int Quiet=0;
int AnalysisOnly=0;
/*******************************************************************/
/* */
/* usage */
/* */
/*******************************************************************/
void usage()
{
cerr << "\nUsage: fst-lattice [options] file [file [file]]\n\n";
cerr << "Options:\n";
cerr << "-h: print this message\n";
cerr << "-a: print analysis characters only\n";
cerr << "-q: suppress status messages\n";
cerr << "\nThis program composes each input line from the second argument file\nwith the transducer read from the first argument file and prints the resulting transducer.\n";
exit(1);
}
/*******************************************************************/
/* */
/* get_flags */
/* */
/*******************************************************************/
void get_flags( int *argc, char **argv )
{
for( int i=1; i<*argc; i++ ) {
if (strcmp(argv[i],"-q") == 0) {
Quiet = 1;
argv[i] = NULL;
}
else if (strcmp(argv[i],"-a") == 0) {
AnalysisOnly = 1;;
argv[i] = NULL;
}
else if (strcmp(argv[i],"-h") == 0) {
usage();
argv[i] = NULL;
}
}
// remove flags from the argument list
int k;
for( int i=k=1; i<*argc; i++)
if (argv[i] != NULL)
argv[k++] = argv[i];
*argc = k;
}
/*******************************************************************/
/* */
/* main */
/* */
/*******************************************************************/
int main( int argc, char **argv )
{
FILE *file, *outfile;
get_flags(&argc, argv);
if (argc < 2)
usage();
if ((file = fopen(argv[1],"rb")) == NULL) {
fprintf(stderr,"\nError: Cannot open transducer file %s\n\n", argv[1]);
exit(1);
}
if (!Quiet)
cerr << "reading transducer...\n";
try {
Transducer a(file);
fclose(file);
if (!Quiet)
cerr << "finished.\n";
if (argc <= 2)
file = stdin;
else {
if ((file = fopen(argv[2],"rt")) == NULL) {
fprintf(stderr,"Error: Cannot open input file %s\n\n", argv[2]);
exit(1);
}
}
if (argc <= 3)
outfile = stdout;
else {
if ((outfile = fopen(argv[3],"wt")) == NULL) {
fprintf(stderr,"Error: Cannot open output file %s\n\n", argv[3]);
exit(1);
}
}
char buffer[BUFFER_SIZE];
for( long n=0; fgets(buffer, BUFFER_SIZE, file); n++ ) {
if (!Quiet)
fprintf(stderr,"\r%ld",n);
int l=(int)strlen(buffer)-1;
if (buffer[l] == '\n')
buffer[l] = '\0';
Transducer *a1 = new Transducer(buffer, &a.alphabet);
Transducer *a2 = &(a || *a1);
delete a1;
if (AnalysisOnly) {
a1 = &(a2->lower_level());
delete a2;
a2 = a1;
}
a1 = &(a2->minimise());
delete a2;
cout << "> " << buffer << "\n";
cout << *a1;
cout << "\n";
delete a1;
}
}
catch (const char *p) {
cerr << p << "\n";
return 1;
}
return 0;
}