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- /* uuencode.c */
-
- /*
- uudecode and uuencode are easily implemented under MSDOS as well. Here
- are the sources for Microsoft C v3.0, but if you have another kind of C
- compiler, there should be perhaps only 1 change -- the output file of
- uudecode and the input file of uuencode must be in binary format.
- (ie. binary files, like .EXE files may have byte patterns that are the
- same as ^Z, which signals end-of-file in non-binary (text) mode).
-
- Don Kneller
- UUCP: ...ucbvax!ucsfcgl!kneller
- ARPA: kneller@ucsf-cgl.ARPA
- BITNET: kneller@ucsfcgl.BITNET
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)uuencode.c 5.1 (Berkeley) 7/2/83";
- #endif
-
- /*
- * uuencode [input] output
- *
- * Encode a file so it can be mailed to a remote system.
- */
-
- #include <stdio.h>
- #include <sys/types.h>
- #include <sys/stat.h>
-
- /* ENC is the basic 1 character encoding function to make a char printing */
-
- #define ENC(c) (((c) & 077) + ' ')
-
- main(int argc, char *argv[])
- {
- FILE *in;
- struct stat sbuf;
- int mode;
-
- /* optional 1st argument */
-
- if (argc > 2)
- {
- #ifdef MSDOS
- /* Use binary mode */
- if ((in = fopen(argv[1], "rb")) == NULL)
- {
- #else
- if ((in = fopen(argv[1], "r")) == NULL)
- {
- #endif
- perror(argv[1]);
- exit(1);
- }
- argv++; argc--;
- }
- else in = stdin;
-
- if (argc != 2)
- {
- printf("Usage: uuencode [infile] remotefile\n");
- exit(2);
- }
-
- /* figure out the input file mode */
-
- fstat(fileno(in), &sbuf);
- mode = sbuf.st_mode & 0777;
- printf("begin %o %s\n", mode, argv[1]);
-
- encode(in, stdout);
-
- printf("end\n");
- exit(0);
- }
-
- /*
- * copy from in to out, encoding as you go along.
- */
-
- encode(FILE *in, FILE *out)
- {
- char buf[80];
- int i, n;
-
- for (;;)
- {
- /* 1 (up to) 45 character line */
-
- n = fr(in, buf, 45);
- putc(ENC(n), out);
-
- for (i = 0; i < n; i += 3)
- outdec(&buf[i], out);
-
- putc('\n', out);
- if (n <= 0)
- break;
- }
- }
-
- /*
- * output one group of 3 bytes, pointed at by p, on file f.
- */
-
- outdec(char *p, FILE *f)
- {
- int c1, c2, c3, c4;
-
- c1 = *p >> 2;
- c2 = (*p << 4) & 060 | (p[1] >> 4) & 017;
- c3 = (p[1] << 2) & 074 | (p[2] >> 6) & 03;
- c4 = p[2] & 077;
- putc(ENC(c1), f);
- putc(ENC(c2), f);
- putc(ENC(c3), f);
- putc(ENC(c4), f);
- }
-
- /* fr: like read but stdio */
-
- int fr(FILE *fd, char *buf, int cnt)
- {
- int c, i;
-
- for (i = 0; i < cnt; i++)
- {
- c = getc(fd);
- if (c == EOF)
- return(i);
- buf[i] = c;
- }
- return (cnt);
- }
-