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- /* Copyright (C) 2002, 2003, 2004 Manuel Novoa III
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, see
- * <http://www.gnu.org/licenses/>.
- */
- /* ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION!
- *
- * Besides uClibc, I'm using this code in my libc for elks, which is
- * a 16-bit environment with a fairly limited compiler. It would make
- * things much easier for me if this file isn't modified unnecessarily.
- * In particular, please put any new or replacement functions somewhere
- * else, and modify the makefile to use your version instead.
- * Thanks. Manuel
- *
- * ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION! */
- /* May 23, 2002 Initial Notes:
- *
- * I'm still tweaking this stuff, but it passes the tests I've thrown
- * at it, and Erik needs it for the gcc port. The glibc extension
- * __wcsnrtombs() hasn't been tested, as I didn't find a test for it
- * in the glibc source. I also need to fix the behavior of
- * _wchar_utf8sntowcs() if the max number of wchars to convert is 0.
- *
- * UTF-8 -> wchar -> UTF-8 conversion tests on Markus Kuhn's UTF-8-demo.txt
- * file on my platform (x86) show about 5-10% faster conversion speed than
- * glibc with mbsrtowcs()/wcsrtombs() and almost twice as fast as glibc with
- * individual mbrtowc()/wcrtomb() calls.
- *
- * If 'DECODER' is defined, then _wchar_utf8sntowcs() will be compiled
- * as a fail-safe UTF-8 decoder appropriate for a terminal, etc. which
- * needs to deal gracefully with whatever is sent to it. In that mode,
- * it passes Markus Kuhn's UTF-8-test.txt stress test. I plan to add
- * an arg to force that behavior, so the interface will be changing.
- *
- * I need to fix the error checking for 16-bit wide chars. This isn't
- * an issue for uClibc, but may be for ELKS. I'm currently not sure
- * if I'll use 16-bit, 32-bit, or configureable wchars in ELKS.
- *
- * July 1, 2002
- *
- * Fixed _wchar_utf8sntowcs() for the max number of wchars == 0 case.
- * Fixed nul-char bug in btowc(), and another in __mbsnrtowcs() for 8-bit
- * locales.
- * Enabled building of a C/POSIX-locale-only version, so full locale support
- * no longer needs to be enabled.
- *
- * Nov 4, 2002
- *
- * Fixed a bug in _wchar_wcsntoutf8s(). Don't store wcs position if dst is NULL.
- * Also, introduce an awful hack into _wchar_wcsntoutf8s() and wcsrtombs() in
- * order to support %ls in printf. See comments below for details.
- * Change behaviour of wc<->mb functions when in the C locale. Now they do
- * a 1-1 map for the range 0x80-UCHAR_MAX. This is for backwards compatibility
- * and consistency with the stds requirements that a printf format string by
- * a valid multibyte string beginning and ending in it's initial shift state.
- *
- * Nov 5, 2002
- *
- * Forgot to change btowc and wctob when I changed the wc<->mb functions yesterday.
- *
- * Nov 7, 2002
- *
- * Add wcwidth and wcswidth, based on Markus Kuhn's wcwidth of 2002-05-08.
- * Added some size/speed optimizations and integrated it into my locale
- * framework. Minimally tested at the moment, but the stub C-locale
- * version (which most people would probably be using) should be fine.
- *
- * Nov 21, 2002
- *
- * Revert the wc<->mb changes from earlier this month involving the C-locale.
- * Add a couple of ugly hacks to support *wprintf.
- * Add a mini iconv() and iconv implementation (requires locale support).
- *
- * Aug 1, 2003
- * Bug fix for mbrtowc.
- *
- * Aug 18, 2003
- * Bug fix: _wchar_utf8sntowcs and _wchar_wcsntoutf8s now set errno if EILSEQ.
- *
- * Feb 11, 2004
- * Bug fix: Fix size check for remaining output space in iconv().
- *
- * Manuel
- */
- /* keep libgen before string.h - and porting.h to use the
- * XPG version of basename */
- #include <libgen.h>
- #include "porting.h"
- #include <string.h>
- #include <iconv.h>
- #include <stdarg.h>
- #include <wchar.h>
- #include "wchar.c" /* for _UC_iconv_t and __iconv_codesets */
- #ifdef L_iconv_main
- static
- #else
- extern
- #endif
- const unsigned char __iconv_codesets[];
- #define IBUF BUFSIZ
- #define OBUF BUFSIZ
- static char *progname;
- static int hide_errors;
- static void error_msg(const char *fmt, ...)
- __attribute__ ((noreturn, format (printf, 1, 2)));
- static void error_msg(const char *fmt, ...)
- {
- va_list arg;
- if (!hide_errors) {
- fprintf(stderr, "%s: ", progname);
- va_start(arg, fmt);
- vfprintf(stderr, fmt, arg);
- va_end(arg);
- }
- exit(EXIT_FAILURE);
- }
- int main(int argc, char **argv)
- {
- FILE *ifile;
- FILE *ofile = stdout;
- const char *p;
- const char *s;
- static const char opt_chars[] = "tfocsl";
- /* 012345 */
- const char *opts[sizeof(opt_chars)]; /* last is infile name */
- iconv_t ic;
- char ibuf[IBUF];
- char obuf[OBUF];
- char *pi;
- char *po;
- size_t ni, no, r, pos;
- hide_errors = 0;
- for (s = opt_chars ; *s ; s++) {
- opts[ s - opt_chars ] = NULL;
- }
- progname = *argv;
- while (--argc) {
- p = *++argv;
- if ((*p != '-') || (*++p == 0)) {
- break;
- }
- do {
- if ((s = strchr(opt_chars,*p)) == NULL) {
- USAGE:
- s = basename(progname);
- fprintf(stderr,
- "%s [-cs] -f fromcode -t tocode [-o outputfile] [inputfile ...]\n"
- " or\n%s -l\n", s, s);
- return EXIT_FAILURE;
- }
- if ((s - opt_chars) < 3) {
- if ((--argc == 0) || opts[s - opt_chars]) {
- goto USAGE;
- }
- opts[s - opt_chars] = *++argv;
- } else {
- opts[s - opt_chars] = p;
- }
- } while (*++p);
- }
- if (opts[5]) { /* -l */
- fprintf(stderr, "Recognized codesets:\n");
- for (s = (char *)__iconv_codesets ; *s ; s += *s) {
- fprintf(stderr," %s\n", s+2);
- }
- s = __LOCALE_DATA_CODESET_LIST;
- do {
- fprintf(stderr," %s\n", __LOCALE_DATA_CODESET_LIST+ (unsigned char)(*s));
- } while (*++s);
- return EXIT_SUCCESS;
- }
- if (opts[4]) {
- hide_errors = 1;
- }
- if (!opts[0] || !opts[1]) {
- goto USAGE;
- }
- if ((ic = iconv_open(opts[0],opts[1])) == ((iconv_t)(-1))) {
- error_msg( "unsupported codeset in %s -> %s conversion\n", opts[1], opts[0]);
- }
- if (opts[3]) { /* -c */
- ((_UC_iconv_t *) ic)->skip_invalid_input = 1;
- }
- if ((s = opts[2]) != NULL) {
- if (!(ofile = fopen(s, "w"))) {
- error_msg( "couldn't open %s for writing\n", s);
- }
- }
- pos = ni = 0;
- do {
- if (!argc || ((**argv == '-') && !((*argv)[1]))) {
- ifile = stdin; /* we don't check for duplicates */
- } else if (!(ifile = fopen(*argv, "r"))) {
- error_msg( "couldn't open %s for reading\n", *argv);
- }
- while ((r = fread(ibuf + ni, 1, IBUF - ni, ifile)) > 0) {
- pos += r;
- ni += r;
- no = OBUF;
- pi = ibuf;
- po = obuf;
- if ((r = iconv(ic, &pi, &ni, &po, &no)) == ((size_t)(-1))) {
- if ((errno != EINVAL) && (errno != E2BIG)) {
- error_msg( "iconv failed at pos %lu : %m\n", (unsigned long) (pos - ni));
- }
- }
- if ((r = OBUF - no) > 0) {
- if (fwrite(obuf, 1, OBUF - no, ofile) < r) {
- error_msg( "write error\n");
- }
- }
- if (ni) { /* still bytes in buffer! */
- memmove(ibuf, pi, ni);
- }
- }
- if (ferror(ifile)) {
- error_msg( "read error\n");
- }
- ++argv;
- if (ifile != stdin) {
- fclose(ifile);
- }
- } while (--argc > 0);
- iconv_close(ic);
- if (ni) {
- error_msg( "incomplete sequence\n");
- }
- return (((_UC_iconv_t *) ic)->skip_invalid_input < 2)
- ? EXIT_SUCCESS : EXIT_FAILURE;
- }
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