int main (int argc, char *argv[]) {
char * in_name, * in_ext, * in_filename, * out_filename;
if (argc != 2) {
printf("Usage %s <grammar_filename>\n", argv[0]);
return 1;
}
in_filename = argv[1];
infile = fopen(in_filename, "r");
if (infile == NULL) {
fprintf(stderr, "ERROR: Could not open file \"%s\"\n", in_filename);
return 1;
}
in_ext = get_filename_extension(in_filename);
in_name = get_filename(in_filename);
out_filename = store_to_file(in_name, in_ext);
printf("###\tRecursive Generator\t###\n");
outfile = fopen(out_filename, "w");
if (outfile == NULL) {
fprintf(stderr, "ERROR:Could not open file \"%s\"\n", outfile);
fclose(infile);
return 1;
}
printf("Parsing file %s...\n", in_filename);
parse_file(infile);
//print_grammar();
printf("Output filename: %s\n", out_filename);
printf("Generating sentence... \t");
generate_sentence(START_ELEMENT);
printf("Done!\n");
fprintf(outfile, "\n");
fclose(infile);
fclose(outfile);
printf("Quiting...\n");
destroy_grammar();
return 0;
}
int main(int argc, char** argv) {
if (argc < 2) {
usage(argv[0]);
}
int len = strlen(argv[1]);
char* dot = ".dot";
char* gc = ".gr";
struct grammar* g;
struct automata* a;
if (strcmp(dot, argv[1]+len-4) == 0) {
a = parse_automata_file(argv[1]);
// 1. Símbolos terminales.
printf("Terminal symbols: \n\t");
for (int i = 0; i < a->number_chars; i++) {
if (i != 0) printf(", ");
printf("%c", a->chars[i]);
}
// 2. Estados.
printf("\n\nStates: \n\t{");
for (int i = 0; i < a->number_states; i++) {
if (i != 0) printf(", ");
printf("q%d", a->states[i]);
}
// 3. Estado inicial.
printf("}\n\nInitial state: q%d\n", a->states[0]);
// 4. Conjunto de estados finales.
printf("\nFinal states = {");
bool first = true;
for (int i = 0; i < a->number_states; i++) {
if (a->final_state[i]) {
if (!first) printf(", ");
printf("q%d", a->states[i]);
}
}
printf("}\n");
// 5. Tabla de la función de transición.
// TODO
print_ascii_table_for_automata(a);
// 6. La especificación completa de la gramática equivalente.
g = automata_to_grammar(a);
struct grammar * aux = take_out_unreachable(g);
destroy_grammar(g);
g = aux;
char filename[255];
memset(filename, 0, 255);
strcpy(filename, argv[1]);
strcpy(filename+len-3, "gr\0");
filename[len-1] = '\0';
FILE* file = fopen(filename, "w");
grammar_output(file, g);
destroy_grammar(g);
free(a);
}
else if (strcmp(gc, argv[1]+len-3) == 0) {
g = parse_grammar_file(argv[1]);
// 1) Símbolos terminales
bool first = true;
printf("Terminal symbols:\n\t");
for (int i = 0; i < g->number_symbols; i++) {
if (g->symbols[i].terminal && g->symbols[i].representation != '\\') {
if (!first) printf(", ");
first = false;
printf("%c", g->symbols[i].representation);
}
}
// 2) Símbolos no terminales
first = true;
printf("\n\nNon-terminal symbols:\n\t");
for (int i = 0; i < g->number_symbols; i++) {
if (!g->symbols[i].terminal) {
if (!first) printf(", ");
first = false;
printf("%c", g->symbols[i].representation);
}
}
// 3) Símbolo inicial.
printf("\n\nDistinguished symbol: %c", g->distinguished_symbol);
// 4) Si la gramática es válida.
// ... a little late for that
// 5) Si la gramática es regular (en caso de que lo sea,
// si es regular a derecha o a izquierda).
printf("\n\n");
if (g->alignment == RIGHT_ALIGNED) {
printf("Right-Aligned grammar");
} else if (g->alignment == LEFT_ALIGNED) {
printf("Left-Aligned grammar");
} else {
printf("Undefined alignment");
}
printf("\n\n");
// 6) Un gráfico del automata finito equivalente.
char filename[255], execCmd[255], pngFileName[50];
memset(filename, 0, 255);
strcpy(filename, argv[1]);
strcpy(filename+len-2, "dot");
int fileNameIndex = baseName(argv[1]) + 1;
strcpy(pngFileName, argv[1] + fileNameIndex);
int pngFileNameLen = strlen(pngFileName);
strcpy(pngFileName + pngFileNameLen - 2, "png");
FILE* file = fopen(filename, "w");
struct grammar* aux;
if (g->alignment != RIGHT_ALIGNED) {
aux = as_right_normal_form(g);
}
else{
struct grammar * aux2 = take_out_unreachable(g);
while(has_unproductive_productions(aux2)){
aux = aux2;
aux2 = take_out_unproductive_production(g);
destroy_grammar(aux);
}
aux = aux2;
}
destroy_grammar(g);
g = aux;
automata_output(file, g);
mkdir("output", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
sprintf(execCmd, "dot -T png -o output/%s %s",
pngFileName, filename
);
fclose(file);
system(execCmd);
destroy_grammar(g);
}
else {
usage(argv[0]);
}
return 0;
}