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/* Conversion of files between different charsets and usages.
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, 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.
*/
#include "recode.h"
#define DOS_CR 13 /* carriage return */
#define DOS_LF 10 /* line feed */
#define DOS_EOF 26 /* old end of file */
#define ESCAPE 25 /* escape for diacritic application */
#define ENDLINE 30 /* end-line code for QNX */
#define TRANSLATE_AND_BREAK(c2, c3) \
putc (ESCAPE, output_file); \
putc (c2, output_file); \
putc (c3, output_file); \
input_char = getc (input_file); \
break;
static int
file_ibmpc_iconqnx (const STEP *step, FILE *input_file, FILE *output_file)
{
int reversible; /* reversibility of recoding */
int input_char;
reversible = 1;
input_char = getc (input_file);
while (1)
switch (input_char)
{
case EOF:
return reversible;
case DOS_EOF:
return 0;
case 133: TRANSLATE_AND_BREAK ('A', 'a');
case 138: TRANSLATE_AND_BREAK ('A', 'e');
case 151: TRANSLATE_AND_BREAK ('A', 'u');
case 130: TRANSLATE_AND_BREAK ('B', 'e');
case 144: TRANSLATE_AND_BREAK ('B', 'E');
case 131: TRANSLATE_AND_BREAK ('C', 'a');
case 136: TRANSLATE_AND_BREAK ('C', 'e');
case 140: TRANSLATE_AND_BREAK ('C', 'i');
case 147: TRANSLATE_AND_BREAK ('C', 'o');
case 150: TRANSLATE_AND_BREAK ('C', 'u');
case 137: TRANSLATE_AND_BREAK ('H', 'e');
case 139: TRANSLATE_AND_BREAK ('H', 'i');
case 129: TRANSLATE_AND_BREAK ('H', 'u');
case 135: TRANSLATE_AND_BREAK ('K', 'c');
case 128: TRANSLATE_AND_BREAK ('K', 'C');
case DOS_CR:
input_char = getc (input_file);
if (input_char == DOS_LF)
{
putc (ENDLINE, output_file);
input_char = getc (input_file);
}
else
putc (DOS_CR, output_file);
break;
case ENDLINE:
case ESCAPE:
reversible = 0;
/* Fall through. */
default:
putc (input_char, output_file);
input_char = getc (input_file);
}
}
static int
file_iconqnx_ibmpc (const STEP *step, FILE *input_file, FILE *output_file)
{
int reversible; /* reversibility of recoding */
int input_char; /* current character */
reversible = 1;
input_char = getc (input_file);
while (1)
switch (input_char)
{
case EOF:
return reversible;
case ENDLINE:
putc (DOS_CR, output_file);
putc (DOS_LF, output_file);
input_char = getc (input_file);
break;
case DOS_CR:
input_char = getc (input_file);
if (input_char == DOS_LF)
reversible = 0;
putc (DOS_CR, output_file);
break;
case ESCAPE:
input_char = getc (input_file);
switch (input_char)
{
case 'A':
input_char = getc (input_file);
switch (input_char)
{
case 'a': input_char = 133; break;
case 'e': input_char = 138; break;
case 'u': input_char = 151; break;
default:
reversible = 0;
putc (ESCAPE, output_file);
putc ('A', output_file);
if (input_char == EOF)
return 0;
}
break;
case 'B':
input_char = getc (input_file);
switch (input_char)
{
case 'e': input_char = 130; break;
case 'E': input_char = 144; break;
default:
reversible = 0;
putc (ESCAPE, output_file);
putc ('B', output_file);
if (input_char == EOF)
return 0;
}
break;
case 'C':
input_char = getc (input_file);
switch (input_char)
{
case 'a': input_char = 131; break;
case 'e': input_char = 136; break;
case 'i': input_char = 140; break;
case 'o': input_char = 147; break;
case 'u': input_char = 150; break;
default:
reversible = 0;
putc (ESCAPE, output_file);
putc ('C', output_file);
if (input_char == EOF)
return 0;
}
break;
case 'H':
input_char = getc (input_file);
switch (input_char)
{
case 'e': input_char = 137; break;
case 'i': input_char = 139; break;
case 'u': input_char = 129; break;
default:
reversible = 0;
putc (ESCAPE, output_file);
putc ('H', output_file);
if (input_char == EOF)
return 0;
}
break;
case 'K':
input_char = getc (input_file);
switch (input_char)
{
case 'c': input_char = 135; break;
case 'C': input_char = 128; break;
default:
reversible = 0;
putc (ESCAPE, output_file);
putc ('K', output_file);
if (input_char == EOF)
return 0;
}
break;
default:
reversible = 0;
putc (ESCAPE, output_file);
if (input_char == EOF)
return 0;
}
/* Fall through. */
default:
putc (input_char, output_file);
input_char = getc (input_file);
}
}
void
module_iconqnx (void)
{
declare_step ("IBM-PC", "Icon-QNX", MANY_TO_MANY, NULL, file_ibmpc_iconqnx);
declare_step ("Icon-QNX", "IBM-PC", MANY_TO_MANY, NULL, file_iconqnx_ibmpc);
declare_alias ("QNX", "Icon-QNX");
}
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