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/*
* The Real SoundTracker - DOS Charset recoder
*
* Copyright (C) 1998 Michael Krause
*
* The tables have been taken from recode-3.4.1/ibmpc.c:
* Copyright (C) 1990, 1993, 1994 Free Software Foundation, Inc.
* Francois Pinard <pinard@iro.umontreal.ca>, 1988.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#include "recode.h"
static unsigned char ibmpc_convert_rulers[48] =
{
'#', /* 176 */
'#', /* 177 */
'#', /* 178 */
'|', /* 179 */
'+', /* 180 */
'|', /* 181 */
'+', /* 182 */
'.', /* 183 */
'.', /* 184 */
'|', /* 185 */
'|', /* 186 */
'.', /* 187 */
'\'', /* 188 */
'\'', /* 189 */
'\'', /* 190 */
'.', /* 191 */
'`', /* 192 */
'+', /* 193 */
'+', /* 194 */
'+', /* 195 */
'-', /* 196 */
'+', /* 197 */
'|', /* 198 */
'+', /* 199 */
'`', /* 200 */
'.', /* 201 */
'=', /* 202 */
'=', /* 203 */
'|', /* 204 */
'=', /* 205 */
'=', /* 206 */
'=', /* 207 */
'+', /* 208 */
'=', /* 209 */
'+', /* 210 */
'`', /* 211 */
'`', /* 212 */
'.', /* 213 */
'.', /* 214 */
'+', /* 215 */
'=', /* 216 */
'\'', /* 217 */
'.', /* 218 */
'#', /* 219 */
'#', /* 220 */
'#', /* 221 */
'#', /* 222 */
'#', /* 223 */
};
typedef struct known_pair KNOWN_PAIR;
struct known_pair
{
unsigned char left; /* first character in pair */
unsigned char right; /* second character in pair */
};
/* Data for IBM PC to ISO Latin-1 code conversions. */
static KNOWN_PAIR ibmpc_known_pairs[] =
{
{ 20, 182}, /* pilcrow sign */
{ 21, 167}, /* section sign */
{128, 199}, /* capital letter C with cedilla */
{129, 252}, /* small letter u with diaeresis */
{130, 233}, /* small letter e with acute accent */
{131, 226}, /* small letter a with circumflex accent */
{132, 228}, /* small letter a with diaeresis */
{133, 224}, /* small letter a with grave accent */
{134, 229}, /* small letter a with ring above */
{135, 231}, /* small letter c with cedilla */
{136, 234}, /* small letter e with circumflex accent */
{137, 235}, /* small letter e with diaeresis */
{138, 232}, /* small letter e with grave accent */
{139, 239}, /* small letter i with diaeresis */
{140, 238}, /* small letter i with circumflex accent */
{141, 236}, /* small letter i with grave accent */
{142, 196}, /* capital letter A with diaeresis */
{143, 197}, /* capital letter A with ring above */
{144, 201}, /* capital letter E with acute accent */
{145, 230}, /* small ligature a with e */
{146, 198}, /* capital ligature A with E */
{147, 244}, /* small letter o with circumblex accent */
{148, 246}, /* small letter o with diaeresis */
{149, 242}, /* small letter o with grave accent */
{150, 251}, /* small letter u with circumflex accent */
{151, 249}, /* small letter u with grave accent */
{152, 255}, /* small letter y with diaeresis */
{153, 214}, /* capital letter O with diaeresis */
{154, 220}, /* capital letter U with diaeresis */
{155, 162}, /* cent sign */
{156, 163}, /* pound sign */
{157, 165}, /* yen sign */
{160, 225}, /* small letter a with acute accent */
{161, 237}, /* small letter i with acute accent */
{162, 243}, /* small letter o with acute accent */
{163, 250}, /* small letter u with acute accent */
{164, 241}, /* small letter n with tilde */
{165, 209}, /* capital letter N with tilde */
{166, 170}, /* feminine ordinal indicator */
{167, 186}, /* masculine ordinal indicator */
{168, 191}, /* inverted question mark */
{170, 172}, /* not sign */
{171, 189}, /* vulgar fraction one half */
{172, 188}, /* vulgar fraction one quarter */
{173, 161}, /* inverted exclamation mark */
{174, 171}, /* left angle quotation mark */
{175, 187}, /* right angle quotation mark */
{225, 223}, /* small german letter sharp s */
{230, 181}, /* small Greek letter mu micro sign */
{241, 177}, /* plus-minus sign */
{246, 247}, /* division sign */
{248, 176}, /* degree sign */
{250, 183}, /* middle dot */
{253, 178}, /* superscript two */
{255, 160}, /* no-break space */
};
#define NUMBER_OF_PAIRS (sizeof (ibmpc_known_pairs) / sizeof (KNOWN_PAIR))
void
recode_ibmpc_to_latin1 (char *string, int len)
{
guint8 c;
int i;
while((c = *string) && len) {
if(c >= 176 && c <= 223) {
c = ibmpc_convert_rulers[c - 176];
} else {
for(i = 0; i < NUMBER_OF_PAIRS; i++) {
if(ibmpc_known_pairs[i].left == c) {
c = ibmpc_known_pairs[i].right;
break;
}
}
}
*string++ = c;
len--;
}
}
void
recode_latin1_to_ibmpc (char *string, int len)
{
guint8 c;
int i;
while((c = *string) && len) {
for(i = 0; i < NUMBER_OF_PAIRS; i++) {
if(ibmpc_known_pairs[i].right == c) {
c = ibmpc_known_pairs[i].left;
break;
}
}
*string++ = c;
len--;
}
}
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