12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273 |
- /* iconv.c - Convert character encoding
- *
- * Copyright 2014 Felix Janda <felix.janda@posteo.de>
- *
- * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/iconv.html
- *
- * Deviations from posix: no idea how to implement -l
- USE_ICONV(NEWTOY(iconv, "cst:f:", TOYFLAG_USR|TOYFLAG_BIN))
- config ICONV
- bool "iconv"
- default y
- depends on TOYBOX_ICONV
- help
- usage: iconv [-f FROM] [-t TO] [FILE...]
- Convert character encoding of files.
- -c Omit invalid chars
- -f Convert from (default UTF-8)
- -t Convert to (default UTF-8)
- */
- #define FOR_iconv
- #include "toys.h"
- #include <iconv.h>
- GLOBALS(
- char *f, *t;
- void *ic;
- )
- static void do_iconv(int fd, char *name)
- {
- char *outstart = toybuf+2048;
- size_t outlen, inlen = 0;
- int readlen = 1;
- for (;;) {
- char *in = toybuf, *out = outstart;
- if (readlen && 0>(readlen = read(fd, in+inlen, 2048-inlen))) {
- perror_msg("read '%s'", name);
- return;
- }
- inlen += readlen;
- if (!inlen) break;
- outlen = 2048;
- iconv(TT.ic, &in, &inlen, &out, &outlen);
- if (in == toybuf) {
- // Skip first byte of illegal sequence to avoid endless loops
- if (toys.optflags & FLAG_c) in++;
- else *(out++) = *(in++);
- inlen--;
- }
- if (out != outstart) xwrite(1, outstart, out-outstart);
- memmove(toybuf, in, inlen);
- }
- }
- void iconv_main(void)
- {
- if (!TT.t) TT.t = "UTF-8";
- if (!TT.f) TT.f = "UTF-8";
- if ((iconv_t)-1 == (TT.ic = iconv_open(TT.t, TT.f)))
- perror_exit("%s/%s", TT.t, TT.f);
- loopfiles(toys.optargs, do_iconv);
- if (CFG_TOYBOX_FREE) iconv_close(TT.ic);
- }
|