From 736afbadbffcb66fc8b589b35526e7eac5048b68 Mon Sep 17 00:00:00 2001 From: Rob Landley Date: Fri, 29 Dec 2017 17:19:02 -0600 Subject: Promote iconv. --- toys/posix/iconv.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 toys/posix/iconv.c (limited to 'toys/posix') diff --git a/toys/posix/iconv.c b/toys/posix/iconv.c new file mode 100644 index 00000000..a31d713b --- /dev/null +++ b/toys/posix/iconv.c @@ -0,0 +1,74 @@ +/* iconv.c - Convert character encoding + * + * Copyright 2014 Felix Janda + * + * 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 utf8) + -t convert to (default utf8) +*/ + +#define FOR_iconv +#include "toys.h" +#include + +GLOBALS( + char *from; + char *to; + + 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.to) TT.to = "utf8"; + if (!TT.from) TT.from = "utf8"; + + if ((iconv_t)-1 == (TT.ic = iconv_open(TT.to, TT.from))) + perror_exit("%s/%s", TT.to, TT.from); + loopfiles(toys.optargs, do_iconv); + if (CFG_TOYBOX_FREE) iconv_close(TT.ic); +} -- cgit v1.2.3