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/* | ||
* iconv.c | ||
* Implementation of SUSv4 XCU iconv utility | ||
* Copyright © 2011 Rich Felker | ||
* Licensed under the terms of the GNU General Public License, v2 or later | ||
*/ | ||
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#include <stdlib.h> | ||
#include <stdio.h> | ||
#include <iconv.h> | ||
#include <locale.h> | ||
#include <langinfo.h> | ||
#include <unistd.h> | ||
#include <errno.h> | ||
#include <string.h> | ||
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int main(int argc, char **argv) | ||
{ | ||
const char *from=0, *to=0; | ||
int b; | ||
iconv_t cd; | ||
char buf[BUFSIZ]; | ||
char outbuf[BUFSIZ*4]; | ||
char *in, *out; | ||
size_t inb; | ||
size_t l; | ||
size_t unitsize=0; | ||
int err=0; | ||
FILE *f; | ||
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while ((b = getopt(argc, argv, "f:t:csl")) != EOF) switch(b) { | ||
case 'l': | ||
puts("UTF-8, UTF-16BE, UTF-16LE, UTF-32BE, UTF32-LE, UCS-2BE, UCS-2LE, WCHAR_T,\n" | ||
"US_ASCII, ISO8859-1, ISO8859-2, ISO8859-3, ISO8859-4, ISO8859-5,\n" | ||
"ISO8859-6, ISO8859-7, ..."); | ||
exit(0); | ||
case 'c': case 's': break; | ||
case 'f': from=optarg; break; | ||
case 't': to=optarg; break; | ||
default: exit(1); | ||
} | ||
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if (!from || !to) { | ||
setlocale(LC_CTYPE, ""); | ||
if (!to) to = nl_langinfo(CODESET); | ||
if (!from) from = nl_langinfo(CODESET); | ||
} | ||
cd = iconv_open(to, from); | ||
if (cd == (iconv_t)-1) { | ||
if (iconv_open(to, "WCHAR_T") == (iconv_t)-1) | ||
fprintf(stderr, "iconv: destination charset %s", to); | ||
else | ||
fprintf(stderr, "iconv: source charset %s", from); | ||
perror(""); | ||
exit(1); | ||
} | ||
if (optind == argc) argv[argc++] = "-"; | ||
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for (; optind < argc; optind++) { | ||
if (argv[optind][0]=='-' && !argv[optind][1]) { | ||
f = stdin; | ||
argv[optind] = "(stdin)"; | ||
} else if (!(f = fopen(argv[optind], "rb"))) { | ||
fprintf(stderr, "iconv: %s", argv[optind]); | ||
perror(""); | ||
err = 1; | ||
continue; | ||
} | ||
inb = 0; | ||
for (;;) { | ||
in = buf; | ||
out = outbuf; | ||
l = fread(buf+inb, 1, sizeof(buf)-inb, f); | ||
inb += l; | ||
if (!inb) break; | ||
if (iconv(cd, &in, &inb, &out, (size_t [1]){sizeof outbuf})==-1 | ||
&& errno == EILSEQ) { | ||
if (!unitsize) { | ||
wchar_t wc='0'; | ||
char dummy[4], *dummyp=dummy; | ||
iconv_t cd2 = iconv_open(from, "WCHAR_T"); | ||
if (cd == (iconv_t)-1) { | ||
unitsize = 1; | ||
} else { | ||
iconv(cd2, | ||
(char *[1]){(char *)&wc}, | ||
(size_t[1]){1}, | ||
&dummyp, (size_t[1]){4}); | ||
unitsize = dummyp-dummy; | ||
if (!unitsize) unitsize=1; | ||
} | ||
} | ||
inb-=unitsize; | ||
in+=unitsize; | ||
} | ||
if (inb && !l && errno==EINVAL) break; | ||
if (out>outbuf && !fwrite(outbuf, out-outbuf, 1, stdout)) { | ||
perror("iconv: write error"); | ||
exit(1); | ||
} | ||
if (inb) memmove(buf, in, inb); | ||
} | ||
if (ferror(f)) { | ||
fprintf(stderr, "iconv: %s", argv[optind]); | ||
perror(""); | ||
err = 1; | ||
} | ||
} | ||
return err; | ||
} |
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[build] | ||
"$CC" $optcflags -std=gnu99 -o iconv "$K"/iconv.c -static $optldflags || exit 1 | ||
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mv iconv "$butch_prefix"/bin/ |