/* macros */
#define BUFSIZE 256
-#define MEMSIZE 8
+#define MAXJUMP 4
+#define MEMSIZE 10
/* type definition */
char *progname = NULL;
int p = 0;
char mem[MEMSIZE] = {0};
+int j = 0;
+int jump[MAXJUMP] = {0};
/* help function */
int process (char *buffer, int nb, FILE *out) {
int i;
- for (i = 0; (i < nb) && (buffer[i] != 0); i++) {
+ for (i = 0; i < nb; i++) {
+ if (buffer[i] == 0) {
+ break;
+ }
+
+ VERBOSE (DEBUG, fprintf (stderr, "%s: p=%d, buffer='%s', memory=[ ", progname, p, buffer + i); int _i; for (_i = 0; _i < MEMSIZE; _i++) fprintf (stderr," %d", mem[_i]); fprintf (stderr," ]\n"));
- VERBOSE (DEBUG, fprintf (stderr, "%s: read '%c' (%u)\n", progname, buffer[i], buffer[i]));
switch (buffer[i]) {
case '>': /* increase pointer */
p++;
break;
case ',': /* read a byte and store it in memory */
if ((p >= 0) && (p < MEMSIZE)) {
- mem[p] = buffer[++i];
+ int c = getchar ();
+ mem[p] = (c > 0) ? c : 0;
} else {
VERBOSE (ERROR, fprintf (stderr, "%s: invalid address (%d)\n", progname, p));
return 1;
}
break;
case '[': /* jump to right bracket if pointer is set to 0 */
+ if ((p < 0) || (p >= MEMSIZE)) {
+ VERBOSE (ERROR, fprintf (stderr, "%s: invalid address (%d)\n", progname, p));
+ return 1;
+ }
if (mem[p] == 0) {
int bracket = 1;
while ((++i < nb) && (bracket > 0)) {
VERBOSE (ERROR, fprintf (stderr, "%s: brace not closed\n", progname));
return 1;
}
+ i--;
} else {
- return process (buffer + i + 1, nb - i - 1, out);
+ if (j >= MAXJUMP) {
+ VERBOSE (ERROR, fprintf (stderr, "%s: too many jump\n", progname));
+ return 1;
+ }
+ jump[j++] = i;
}
break;
case ']': /* jump to left bracket if pointer is different to 0 */
- if (mem[p] != 0) {
- i = -1;
+ if (j <= 0) {
+ VERBOSE (ERROR, fprintf (stderr, "%s: can't jump back\n", progname));
+ return 1;
}
+ i = jump[--j] - 1;
break;
+ case ' ':
+ case '\t':
case '\n':
case '\r':
break;
}
int c;
- while ((c = getopt(argc, argv, "i:m:o:hv:")) != EOF) {
+ while ((c = getopt(argc, argv, "e:i:m:o:hv:")) != EOF) {
switch (c) {
+ case 'e':
+ if (buffer) {
+ free (buffer);
+ }
+ buffer = strdup (optarg);
+ if (buffer == NULL) {
+ VERBOSE (ERROR, fprintf (stderr, "%s: can't allocate memory\n", progname));
+ return 1;
+ }
+ size = strlen (buffer) + 1;
+ break;
case 'i':
input = optarg;
break;
VERBOSE (ERROR, fprintf (stderr, "%s: can't open file '%s' for reading\n", progname, input));
return 1;
}
- } else {
+ } else if (buffer == NULL) {
fid = stdin;
}
/* read input file */
- while (!feof (fid)) {
- buffer = (char *) realloc (buffer, size + BUFSIZE);
- if (buffer == NULL) {
- VERBOSE (ERROR, fprintf (stderr, "%s: can't allocate memory\n", progname));
- return 1;
+ if (fid) {
+ while (!feof (fid)) {
+ buffer = (char *) realloc (buffer, size + BUFSIZE);
+ if (buffer == NULL) {
+ VERBOSE (ERROR, fprintf (stderr, "%s: can't allocate memory\n", progname));
+ return 1;
+ }
+ memset (buffer + size, 0, BUFSIZE);
+ n = fread (buffer + size, 1, BUFSIZE, fid);
+ if (errno != 0) {
+ VERBOSE (ERROR, fprintf (stderr, "%s: can't read data from file '%s'\n", progname, input));
+ return 1;
+ }
+ size += BUFSIZE;
}
- memset (buffer + size, 0, BUFSIZE);
- n = fread (buffer + size, 1, BUFSIZE, fid);
- if (errno != 0) {
- VERBOSE (ERROR, fprintf (stderr, "%s: can't read data from file '%s'\n", progname, input));
- return 1;
+
+ /* close input file */
+ if (fid != stdin) {
+ fclose (fid);
}
- size += BUFSIZE;
+ VERBOSE (DEBUG, fprintf (stderr, "%s: read %d bytes\n", progname, size + n - BUFSIZE));
+ } else {
+ VERBOSE (DEBUG, fprintf (stderr, "%s: prog %d bytes\n", progname, size -1));
}
- /* close input file */
- fclose (fid);
- VERBOSE (DEBUG, fprintf (stderr, "%s: read %d bytes\n", progname, size + n - BUFSIZE));
-
/* check output file */
if (output) {
fid = fopen (output, "w");
/* main process */
int rc = process (buffer, size, fid);
- VERBOSE (INFO, fprintf (stdout, "\nmemory:"); int _i; for (_i = 0; _i < MEMSIZE; _i++) fprintf (stdout," %d", mem[_i]); fprintf (stdout,"\n"));
/* close output file */
- fclose (fid);
+ if (fid != stdout) {
+ fclose (fid);
+ }
+
+ VERBOSE (INFO, fprintf (stdout, "\nmemory:"); int _i; for (_i = 0; _i < MEMSIZE; _i++) fprintf (stdout," %d", mem[_i]); fprintf (stdout,"\n"));
return rc;
}
// test: bf.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
// test: bf.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }'
// test: bf.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
+// test: bf.exe -i error.b 2>&1 | grep "can't open" | grep -q "reading"
+// test: echo ">>." | bf.exe -o error/error.b 2>&1 | grep "can't open" | grep -q "writing"
+// test: echo '+++>++>>-<--' | bf.exe -v2 | grep -q "memory: 3 2 -2 -1 0"
+// test: bf.exe -e '+++>++>>-<--' -v2 | grep -q "memory: 3 2 -2 -1 0"
+// test: bf.exe -m "51 50 49" -e '.>.>.' |grep -q "321"
// test: echo '++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.' | bf.exe -v1 | grep -q "Hello World!"
// test: echo '++++++++++[>+>+++>+++++++>++++++++++<<<<-]>>>++++++++++++++.>+++++++++++++++++.<<++.>+++++++++++++.>--.<<.>+++.+.--.>----.++++++.+.<++.>----.++.<<.>>+.-------.<<.>>++.<.>+++++.<<.>-.+.<.>---.>---.<-.++++++++.>----.<---.>+++++++.<---.++++++++.' | bf.exe -v1 | grep -q "Tu as decouvert un peu de brainfuck"
-// test: echo ',4>++++++[<-------->-],3[<+>-]<.' | bf.exe -v1 | grep -q 7
-
-// test: echo ',3>,2>>++++++++++++++++[-<+++<---<--->>>]<<[<[>>+>+<<<-]>>>[<<<+>>>-]<<-]>.' | bf.exe -v1 | grep -q 6
-// test: echo ',3>,2[->>+<<]+<[->>>[>>>>>+<<<<<->+<<]<[>]>>>>>[-<<->>>>>>>]<[>]<<<<<<]>[>>>>->]<<<<<<[-]>[-]>>[-]>.' | bf.exe -v1 | grep -q 3
+// test: echo -e "123\0" | bf.exe -e ',[>,]' -v2 | grep -q "memory: 49 50 51 0"
+// test: echo -e "4+3\0" | bf.exe -e ',>++++++[<-------->-],,[<+>-]<.' -v1 | grep -q 7
+// test: echo -e "1+7\0" | bf.exe -e ',>++++++[<-------->-],,[<+>-]<.' -v1 | grep -q 8
+// test: echo -e "3*2\0" | bf.exe -e ',>,,>++++++++[<------<------>>-]<<[>[>+>+<<-]>>[<<+>>-]<<<-]>>>++++++[<++++++++>-]<.' -v1 | grep -q 6
+// test: echo -e "1*7\0" | bf.exe -e ',>,,>++++++++[<------<------>>-]<<[>[>+>+<<-]>>[<<+>>-]<<<-]>>>++++++[<++++++++>-]<.' -v1 | grep -q 7
/* vim: set ts=4 sw=4 et: */
Soft'N'Design Software / projects / brainfuck.git / blobdiff