+ for (++p; n > 0; p += 4, n -= 3)
+ if (n >= 3) {
+ ch = DEC(p[0]) << 2 | DEC(p[1]) >> 4;
+ putchar(ch);
+ ch = DEC(p[1]) << 4 | DEC(p[2]) >> 2;
+ putchar(ch);
+ ch = DEC(p[2]) << 6 | DEC(p[3]);
+ putchar(ch);
+ }
+ else {
+ if (n >= 1) {
+ ch = DEC(p[0]) << 2 | DEC(p[1]) >> 4;
+ putchar(ch);
+ }
+ if (n >= 2) {
+ ch = DEC(p[1]) << 4 | DEC(p[2]) >> 2;
+ putchar(ch);
+ }
+ if (n >= 3) {
+ ch = DEC(p[2]) << 6 | DEC(p[3]);
+ putchar(ch);
+ }
+ }
+ }
+ if (!fgets(buf, sizeof(buf), stdin) || strcmp(buf, "end\n")) {
+ (void)fprintf(stderr, "uudecode: %s: no \"end\" line.\n",
+ filename);
+ return(1);