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hfsutils
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hfsutils/charset.c

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/*
* hfsutils - tools for reading and writing Macintosh HFS volumes
* Copyright (C) 1996-1998 Robert Leslie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: charset.c,v 1.5 1998/11/02 22:08:23 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include <stdlib.h>
# include <string.h>
# include "charset.h"
static const
UCS2 macroman[256] = {
0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,
0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f,
0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x007f,
0x00c4, 0x00c5, 0x00c7, 0x00c9, 0x00d1, 0x00d6, 0x00dc, 0x00e1,
0x00e0, 0x00e2, 0x00e4, 0x00e3, 0x00e5, 0x00e7, 0x00e9, 0x00e8,
0x00ea, 0x00eb, 0x00ed, 0x00ec, 0x00ee, 0x00ef, 0x00f1, 0x00f3,
0x00f2, 0x00f4, 0x00f6, 0x00f5, 0x00fa, 0x00f9, 0x00fb, 0x00fc,
0x2020, 0x00b0, 0x00a2, 0x00a3, 0x00a7, 0x2022, 0x00b6, 0x00df,
0x00ae, 0x00a9, 0x2122, 0x00b4, 0x00a8, 0x2260, 0x00c6, 0x00d8,
0x221e, 0x00b1, 0x2264, 0x2265, 0x00a5, 0x00b5, 0x2202, 0x2211,
0x220f, 0x03c0, 0x222b, 0x00aa, 0x00ba, 0x2126, 0x00e6, 0x00f8,
0x00bf, 0x00a1, 0x00ac, 0x221a, 0x0192, 0x2248, 0x2206, 0x00ab,
0x00bb, 0x2026, 0x00a0, 0x00c0, 0x00c3, 0x00d5, 0x0152, 0x0153,
0x2013, 0x2014, 0x201c, 0x201d, 0x2018, 0x2019, 0x00f7, 0x25ca,
0x00ff, 0x0178, 0x2044, 0x00a4, 0x2039, 0x203a, 0xfb01, 0xfb02,
0x2021, 0x00b7, 0x201a, 0x201e, 0x2030, 0x00c2, 0x00ca, 0x00c1,
0x00cb, 0x00c8, 0x00cd, 0x00ce, 0x00cf, 0x00cc, 0x00d3, 0x00d4,
0xf8ff, 0x00d2, 0x00da, 0x00db, 0x00d9, 0x0131, 0x02c6, 0x02dc,
0x00af, 0x02d8, 0x02d9, 0x02da, 0x00b8, 0x02dd, 0x02db, 0x02c7
};
static const
char *macroman_subst[128] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 - 0x8f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 - 0x9f */
"+", 0, 0, 0, 0, "*", 0, 0, /* 0xa0 - 0xa7 */
0, 0, "[tm]", 0, 0, "!=", 0, 0, /* 0xa8 - 0xaf */
"[inf]", 0, "<=", ">=", 0, 0, "[partial]", "[Sum]", /* 0xb0 - 0xb7 */
"[Prod]", "[pi]", "[Integral]", 0, 0, "[ohm]", 0, 0, /* 0xb8 - 0xbf */
0, 0, 0, "[Sqrt]", "[f]", "~=", "[delta]", 0, /* 0xc0 - 0xc7 */
0, "...", 0, 0, 0, 0, "OE", "oe", /* 0xc8 - 0xcf */
"-", "--", "``", "''", "`", "'", 0, "#", /* 0xd0 - 0xd7 */
0, "Y", "/", 0, "<", ">", "fi", "fl", /* 0xd8 - 0xdf */
"++", 0, ",", ",,", "o/oo", 0, 0, 0, /* 0xe0 - 0xe7 */
0, 0, 0, 0, 0, 0, 0, 0, /* 0xe8 - 0xef */
"[Apple]", 0, 0, 0, 0, "i", "^", "~", /* 0xf0 - 0xf7 */
0, "-", "\267", "\260", 0, "\"", "-", "^" /* 0xf8 - 0xff */
};
static
unsigned char latin1[256];
static const
char *latin1_subst[128] = {
"", "", "", "", "", "", "", "", /* 0x80 - 0x87 */
"", "", "", "", "", "", "", "", /* 0x88 - 0x8f */
"", "", "", "", "", "", "", "", /* 0x90 - 0x97 */
"", "", "", "", "", "", "", "", /* 0x98 - 0x9f */
0, 0, 0, 0, 0, 0, "|", 0, /* 0xa0 - 0xa7 */
0, 0, 0, 0, 0, "-", 0, 0, /* 0xa8 - 0xaf */
0, 0, "[^2]", "[^3]", 0, 0, 0, 0, /* 0xb0 - 0xb7 */
0, "[^1]", 0, 0, "[1/4]", "[1/2]", "[3/4]", 0, /* 0xb8 - 0xbf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0 - 0xcf */
"D", 0, 0, 0, 0, 0, 0, "x", /* 0xd0 - 0xd7 */
0, 0, 0, 0, 0, "Y", "P", 0, /* 0xd8 - 0xdf */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xe0 - 0xef */
"d", 0, 0, 0, 0, 0, 0, 0, /* 0xf0 - 0xf7 */
0, 0, 0, 0, 0, "y", "p", 0 /* 0xf8 - 0xff */
};
/*
* NAME: charset->unicode()
* DESCRIPTION: return a Unicode string for MacOS Standard Roman
*/
UCS2 *cs_unicode(char *mstr, int *lenptr)
{
int len, i;
UCS2 *unicode, *ptr;
len = lenptr ? *lenptr : strlen(mstr);
unicode = malloc((len + 1) * sizeof(UCS2));
if (unicode == 0)
return 0;
ptr = unicode;
for (i = 0; i < len; ++i)
*ptr++ = macroman[*(unsigned char *) mstr++];
*ptr = 0;
return unicode;
}
/*
* NAME: charset->latin1()
* DESCRIPTION: return a Latin-1 (ISO 8859-1) string for MacOS Standard Roman
*/
char *cs_latin1(char *mstr, int *lenptr)
{
int ilen, olen, i;
char *latin1, *ptr;
const char *subst;
unsigned char ch;
UCS2 unicode;
ilen = lenptr ? *lenptr : strlen(mstr);
olen = 0;
for (i = 0; i < ilen; ++i)
{
ch = *((unsigned char *) mstr + i);
unicode = macroman[ch];
if (unicode & 0xff00)
olen += strlen(macroman_subst[ch & 0x7f]);
else
++olen;
}
latin1 = malloc(olen + 1);
if (latin1 == 0)
return 0;
ptr = latin1;
for (i = 0; i < ilen; ++i)
{
ch = *(unsigned char *) mstr++;
unicode = macroman[ch];
if (unicode & 0xff00)
{
/* substitute similar Latin-1 character(s) */
subst = macroman_subst[ch & 0x7f];
strcpy(ptr, subst);
ptr += strlen(subst);
}
else
*ptr++ = unicode;
}
*ptr = 0;
if (lenptr)
*lenptr = olen;
return latin1;
}
/*
* NAME: charset->mktable()
* DESCRIPTION: construct latin1[] table from macroman[]
*/
static
void mktable(void)
{
int i;
for (i = 0x00; i <= 0xff; ++i)
latin1[i] = 0xff;
for (i = 0x00; i <= 0xff; ++i)
{
UCS2 unicode = macroman[i];
if (! (unicode & 0xff00))
latin1[unicode] = i;
}
}
/*
* NAME: charset->macroman()
* DESCRIPTION: return a MacOS Standard Roman string for Latin-1 (ISO 8859-1)
*/
char *cs_macroman(char *lstr, int *lenptr)
{
int ilen, olen, i;
char *macroman, *ptr;
const char *subst;
unsigned char ch, msr;
if (latin1[0x80] != 0xff)
mktable();
ilen = lenptr ? *lenptr : strlen(lstr);
olen = 0;
for (i = 0; i < ilen; ++i)
{
ch = *((unsigned char *) lstr + i);
msr = latin1[ch];
if (msr == 0xff)
olen += strlen(latin1_subst[ch & 0x7f]);
else
++olen;
}
macroman = malloc(olen + 1);
if (macroman == 0)
return 0;
ptr = macroman;
for (i = 0; i < ilen; ++i)
{
ch = *(unsigned char *) lstr++;
msr = latin1[ch];
if (msr == 0xff)
{
/* substitute similar MacOS Standard Roman character(s) */
subst = latin1_subst[ch & 0x7f];
strcpy(ptr, subst);
ptr += strlen(subst);
}
else
*ptr++ = msr;
}
*ptr = 0;
if (lenptr)
*lenptr = olen;
return macroman;
}
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