/* 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, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* 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 */ #include "porting.h" #include <string.h> #include <iconv.h> #include <stdarg.h> #include <libgen.h> #include <wchar.h> #include "wchar.c" /* for _UC_iconv_t and __iconv_codesets */ extern 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; }