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/* iconv.c - Convert character encoding
*
* Copyright 2014 Felix Janda <felix.janda@posteo.de>
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/
USE_ICONV(NEWTOY(iconv, "t:f:", TOYFLAG_USR|TOYFLAG_BIN))
config ICONV
bool "iconv"
default n
help
usage: iconv [-f FROM] [-t TO] [FILE...]
Convert character encoding of files.
-f convert from (default utf8)
-t convert to (default utf8)
*/
#define FOR_iconv
#include "toys.h"
#include <iconv.h>
GLOBALS(
char *from;
char *to;
)
iconv_t ic; // Can't be put into GLOBALS because iconv_t is defined in iconv.h
static void do_iconv(int fd, char *name)
{
size_t inleft = 0, outleft = 2048;
char *in = toybuf, *out = toybuf + 2048;
while (1) {
if (!inleft || (errno == EINVAL)) {
memmove(in, toybuf, inleft);
if (!(inleft += read(fd, toybuf + inleft, 2048 - inleft))) {
xwrite(1, toybuf + 2048, 2048 - outleft);
break;
}
in = toybuf;
} else if (errno == E2BIG) {
xwrite(1, toybuf + 2048, 2048 - outleft);
out = toybuf + 2048;
outleft = 2048;
} else if (errno == EILSEQ) {
in++;
inleft--;
}
if (iconv(ic, &in, &inleft, &out, &outleft) != (size_t)-1) errno = 0;
}
}
void iconv_main(void)
{
char *from = "utf8", *to = "utf8";
if (toys.optflags & FLAG_f) from = TT.from;
if (toys.optflags & FLAG_t) to = TT.to;
if ((ic = iconv_open(to, from)) == (iconv_t)-1) error_exit("iconv_open");
loopfiles(toys.optargs, do_iconv);
if (CFG_TOYBOX_FREE) iconv_close(ic);
}
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