diff options
| -rw-r--r-- | toys/pending/uuencode.c | 113 | ||||
| -rw-r--r-- | toys/posix/uuencode.c | 67 |
2 files changed, 67 insertions, 113 deletions
diff --git a/toys/pending/uuencode.c b/toys/pending/uuencode.c deleted file mode 100644 index fcd9be78..00000000 --- a/toys/pending/uuencode.c +++ /dev/null @@ -1,113 +0,0 @@ -/* 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 n - help - usage: uuencode [-m] [file] encode-filename - - Uuencode stdin (or file) to stdout, with encode-filename in the output. - - -m base64-encode -*/ - -#define FOR_uuencode -#include "toys.h" - -// Convert 3 bytes of input to 4 bytes of output -static void uuencode_b64_3bytes(const char *in, int bytes) -{ - unsigned int i, x; - - for (i = x = 0; i<4; i++) { - if (i < bytes) x |= (in[i] & 0x0ff) << (8*(2-i)); - xputc(i > bytes ? '=' : toybuf[(x>>((3-i)*6)) & 0x3f]); - } -} - -static void uuencode_b64_line(const char *in, int len) -{ - while (len > 0) { - uuencode_b64_3bytes(in, len < 3 ? len : 3); - in += 3; - len -= 3; - }; - xprintf("\n"); -} - -static void uuencode_b64(int fd, const char *name) -{ - int len; - char buf[(76/4)*3]; - - xprintf("begin-base64 744 %s\n",name); - do { - len = xread(fd, buf, sizeof(buf)); - - uuencode_b64_line(buf, len); - } while (len > 0); - xprintf("====\n"); -} - - -static void uuencode_uu_3bytes(const char *in) -{ - unsigned int i, x = 0; - - for (i = 0; i <= 2; i++) x |= (in[i] & 0x0ff) << (8*(2-i)); - for (i = 0; i <= 3; i++) xputc(32 + ((x >> (6*(3-i))) & 0x3f)); -} - -static void uuencode_uu_line(char *in, int len) -{ - if (len > 0) { - int i; - - xputc(len+32); - for (i = 0; i < len; i += 3) uuencode_uu_3bytes(in+i); - } - xprintf("\n"); -} - -static void uuencode_uu(int fd, const char *name) -{ - int len; - char buf[45]; - - xprintf("begin 744 %s\n",name); - do { - len = xread(fd, buf, 45); - uuencode_uu_line(buf, len); - } while (len > 0); - xprintf("end\n"); -} - -void uuencode_main(void) -{ - char *p, *name = toys.optargs[0]; - int i, fd = 0; - - // base64 table - - p = toybuf; - for (i = 'A'; i != ':'; i++) { - if (i == 'Z'+1) i = 'a'; - if (i == 'z'+1) i = '0'; - *(p++) = i; - } - *(p++) = '+'; - *(p++) = '/'; - - if (toys.optc == 2) { - fd = xopen(toys.optargs[0], O_RDONLY); // dies if error - name = toys.optargs[1]; - } - if (toys.optflags & FLAG_m) uuencode_b64(fd, name); - else uuencode_uu(fd, name); -} diff --git a/toys/posix/uuencode.c b/toys/posix/uuencode.c new file mode 100644 index 00000000..78d199a9 --- /dev/null +++ b/toys/posix/uuencode.c @@ -0,0 +1,67 @@ +/* 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] [file] encode-filename + + Uuencode stdin (or file) to stdout, with encode-filename in the output. + + -m base64-encode +*/ + +#define FOR_uuencode +#include "toys.h" + +void uuencode_main(void) +{ + char *p, *name = toys.optargs[toys.optc-1], buf[(76/4)*3]; + + int i, m = toys.optflags & FLAG_m, fd = 0; + + if (toys.optc > 1) fd = xopen(toys.optargs[0], O_RDONLY); + + // base64 table + + p = toybuf; + for (i = 'A'; i != ':'; i++) { + if (i == 'Z'+1) i = 'a'; + if (i == 'z'+1) i = '0'; + *(p++) = i; + } + *(p++) = '+'; + *(p++) = '/'; + + 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 + 0x20); + } + } + xputc('\n'); + } + xputs(m ? "====" : "end"); +} |