bfcompiler

/* brainfuck compiler */
/* By: Mostafa Abdelaziz */
/* This software is FREE as in HELL */

#include <stdio.h>
#include <unistd.h>

int main(int argc, char *argv[]) {

    FILE *src, *cfile;
    char c;
    char *gccvp[4];

    if (argc != 3)
        return 0;

    if (!(src = fopen(argv[1], "r")))
        return 0;

    if (!(cfile = fopen("/tmp/bftmp.c", "w"))) {
        fclose(src);
        return 0;
    }

    fputs("#include <stdio.h>\n", cfile);
    fputs("int main () {\n", cfile);
    fputs("char array[4096] = {0};\n", cfile);
    fputs("char *ptr = &array[2048];\n", cfile);

    while (fscanf(src, "%c", &c) != EOF) {

        switch (c) {
            case '>':
                fputs("++ptr;\n", cfile);
                break;
            case '<':
                fputs("--ptr;\n", cfile);
                break;
            case '+':
                fputs("++*ptr;\n", cfile);
                break;
            case '-':
                fputs("--*ptr;\n", cfile);
                break;
            case '.':
                fputs("putchar(*ptr);\n", cfile);
                break;
            case ',':
                fputs("*ptr=getchar();\n", cfile);
                break;
            case '[':
                fputs("while (*ptr) {\n", cfile);
                break;
            case ']':
                fputs("}\n", cfile);
                break;
            default:
                break;
        }

    }

    fputs("return 0;\n", cfile);
    fputs("}\n", cfile);

    fclose(src);
    fclose(cfile);

    execlp("gcc", "gcc", "-o", argv[2], "/tmp/bftmp.c", NULL);

    return 0;

}