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- /* uuencode.c - uuencode / base64 encode
- *
- * Copyright 2013 Erich Plondke <toybox@erich.wreck.org>
- *
- * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/uuencode.html
- USE_UUENCODE(NEWTOY(uuencode, "<1>2m", TOYFLAG_USR|TOYFLAG_BIN))
- config UUENCODE
- bool "uuencode"
- default y
- help
- usage: uuencode [-m] [INFILE] ENCODE_FILENAME
- Uuencode stdin (or INFILE) to stdout, with ENCODE_FILENAME in the output.
- -m Base64
- */
- #define FOR_uuencode
- #include "toys.h"
- void uuencode_main(void)
- {
- char *name = toys.optargs[toys.optc-1], buf[(76/4)*3];
- int i, m = FLAG(m), fd = 0;
- if (toys.optc > 1) fd = xopenro(toys.optargs[0]);
- base64_init(toybuf);
- xprintf("begin%s 744 %s\n", m ? "-base64" : "", name);
- for (;;) {
- char *in;
- if (!(i = xread(fd, buf, m ? sizeof(buf) : 45))) break;
- if (!m) xputc(i+32);
- in = buf;
- for (in = buf; in-buf < i; ) {
- int j, x, bytes = i - (in-buf);
- if (bytes > 3) bytes = 3;
- for (j = x = 0; j<4; j++) {
- int out;
- if (j < bytes) x |= (*(in++) & 0x0ff) << (8*(2-j));
- out = (x>>((3-j)*6)) & 0x3f;
- xputc(m ? (j > bytes ? '=' : toybuf[out]) : (out ? out + 0x20 : 0x60));
- }
- }
- xputc('\n');
- }
- xputs(m ? "====" : "end");
- }
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