/* Copyright (C) 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Bruno Haible <haible@clisp.cons.org>, 2000. The GNU C 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. The GNU C 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 the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Create a table from CHARSET to Unicode. This is a good test for CHARSET's iconv() module, in particular the FROM_LOOP BODY macro. */ #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <iconv.h> #include <errno.h> /* Converts a byte buffer to a hexadecimal string. */ static const char* hexbuf (unsigned char buf[], unsigned int buflen) { static char msg[50]; switch (buflen) { case 1: sprintf (msg, "0x%02X", buf[0]); break; case 2: sprintf (msg, "0x%02X%02X", buf[0], buf[1]); break; case 3: sprintf (msg, "0x%02X%02X%02X", buf[0], buf[1], buf[2]); break; case 4: sprintf (msg, "0x%02X%02X%02X%02X", buf[0], buf[1], buf[2], buf[3]); break; default: abort (); } return msg; } /* Attempts to convert a byte buffer BUF (BUFLEN bytes) to OUT (6 bytes) using the conversion descriptor CD. Returns the number of written bytes, or 0 if ambiguous, or -1 if invalid. */ static int try (iconv_t cd, unsigned char buf[], unsigned int buflen, unsigned char *out) { const char *inbuf = (const char *) buf; size_t inbytesleft = buflen; char *outbuf = (char *) out; size_t outbytesleft = 6; size_t result = iconv (cd, (char **) &inbuf, &inbytesleft, &outbuf, &outbytesleft); if (result == (size_t)(-1)) { if (errno == EILSEQ) { return -1; } else if (errno == EINVAL) { return 0; } else { int saved_errno = errno; fprintf (stderr, "%s: iconv error: ", hexbuf (buf, buflen)); errno = saved_errno; perror (""); exit (1); } } else { if (inbytesleft != 0) { fprintf (stderr, "%s: inbytes = %ld, outbytes = %ld\n", hexbuf (buf, buflen), (long) (buflen - inbytesleft), (long) (6 - outbytesleft)); exit (1); } return 6 - outbytesleft; } } /* Returns the out[] buffer as a Unicode value. */ static unsigned int utf8_decode (const unsigned char *out, unsigned int outlen) { return (outlen==1 ? out[0] : outlen==2 ? ((out[0] & 0x1f) << 6) + (out[1] & 0x3f) : outlen==3 ? ((out[0] & 0x0f) << 12) + ((out[1] & 0x3f) << 6) + (out[2] & 0x3f) : outlen==4 ? ((out[0] & 0x07) << 18) + ((out[1] & 0x3f) << 12) + ((out[2] & 0x3f) << 6) + (out[3] & 0x3f) : outlen==5 ? ((out[0] & 0x03) << 24) + ((out[1] & 0x3f) << 18) + ((out[2] & 0x3f) << 12) + ((out[3] & 0x3f) << 6) + (out[4] & 0x3f) : outlen==6 ? ((out[0] & 0x01) << 30) + ((out[1] & 0x3f) << 24) + ((out[2] & 0x3f) << 18) + ((out[3] & 0x3f) << 12) + ((out[4] & 0x3f) << 6) + (out[5] & 0x3f) : 0xfffd); } int main (int argc, char *argv[]) { const char *charset; iconv_t cd; if (argc != 2) { fprintf (stderr, "Usage: tst-table-to charset\n"); exit (1); } charset = argv[1]; cd = iconv_open ("UTF-8", charset); if (cd == (iconv_t)(-1)) { perror ("iconv_open"); exit (1); } { unsigned char out[6]; unsigned char buf[4]; unsigned int i0, i1, i2, i3; int result; for (i0 = 0; i0 < 0x100; i0++) { buf[0] = i0; result = try (cd, buf, 1, out); if (result < 0) { } else if (result > 0) { printf ("0x%02X\t0x%04X\n", i0, utf8_decode (out, result)); } else { for (i1 = 0; i1 < 0x100; i1++) { buf[1] = i1; result = try (cd, buf, 2, out); if (result < 0) { } else if (result > 0) { printf ("0x%02X%02X\t0x%04X\n", i0, i1, utf8_decode (out, result)); } else { for (i2 = 0; i2 < 0x100; i2++) { buf[2] = i2; result = try (cd, buf, 3, out); if (result < 0) { } else if (result > 0) { printf ("0x%02X%02X%02X\t0x%04X\n", i0, i1, i2, utf8_decode (out, result)); } else if (strcmp (charset, "UTF-8")) { for (i3 = 0; i3 < 0x100; i3++) { buf[3] = i3; result = try (cd, buf, 4, out); if (result < 0) { } else if (result > 0) { printf ("0x%02X%02X%02X%02X\t0x%04X\n", i0, i1, i2, i3, utf8_decode (out, result)); } else { fprintf (stderr, "%s: incomplete byte sequence\n", hexbuf (buf, 4)); exit (1); } } } } } } } } } if (iconv_close (cd) < 0) { perror ("iconv_close"); exit (1); } if (ferror (stdin) || fflush (stdout) || ferror (stdout)) { fprintf (stderr, "I/O error\n"); exit (1); } exit (0); }