diff options
Diffstat (limited to 'toys')
| -rw-r--r-- | toys/pending/iconv.c | 63 |
1 files changed, 33 insertions, 30 deletions
diff --git a/toys/pending/iconv.c b/toys/pending/iconv.c index d9f28176..847fcfd1 100644 --- a/toys/pending/iconv.c +++ b/toys/pending/iconv.c @@ -2,13 +2,13 @@ * * Copyright 2014 Felix Janda <felix.janda@posteo.de> * - * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ + * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/iconv.html USE_ICONV(NEWTOY(iconv, "t:f:", TOYFLAG_USR|TOYFLAG_BIN)) config ICONV bool "iconv" - default n + default y help usage: iconv [-f FROM] [-t TO] [FILE...] @@ -16,7 +16,6 @@ config ICONV -f convert from (default utf8) -t convert to (default utf8) - */ #define FOR_iconv @@ -26,42 +25,46 @@ config ICONV GLOBALS( char *from; char *to; -) -iconv_t ic; // Can't be put into GLOBALS because iconv_t is defined in iconv.h + void *ic; +) static void do_iconv(int fd, char *name) { - size_t inleft = 0, outleft = 2048; - char *in = toybuf, *out = toybuf + 2048; + char *outstart = toybuf+2048; + size_t inleft = 0; + int len = 1; - 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; + do { + size_t outleft = 2048; + char *in = toybuf, *out = outstart; + + len = read(fd, toybuf+inleft, 2048-inleft); + + if (len < 0) perror_msg("read '%s'"); + inleft += len; + + do { + if (iconv(TT.ic, &in, &inleft, &out, &outleft) == -1 + && (errno == EILSEQ || (in == toybuf && errno == EINVAL))) + { + if (outleft) { + // Skip first byte of illegal sequence to avoid endless loops + *(out++) = *(in++); + inleft--; + } } - 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; - } + xwrite(1, outstart, out-outstart); + // Top off input buffer + memmove(in, toybuf, inleft); + } while (len < 1 && inleft); + } while (len > 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"); + TT.ic = iconv_open(TT.to ? TT.to : "utf8", TT.from ? TT.from : "utf8"); + if (TT.ic == (iconv_t)-1) error_exit("bad encoding"); loopfiles(toys.optargs, do_iconv); - if (CFG_TOYBOX_FREE) iconv_close(ic); + if (CFG_TOYBOX_FREE) iconv_close(TT.ic); } |