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/*
* cook - file construction tool
* Copyright (C) 1999 Peter Miller;
* All rights reserved.
*
* 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, USA.
*
* MANIFEST: functions for reading input and filtering out CR LF sequences
*/
#include <input/crlf.h>
#include <input/private.h>
#include <str.h>
#include <trace.h>
typedef struct input_crlf_ty input_crlf_ty;
struct input_crlf_ty
{
input_ty inherited;
input_ty *fp;
int delete_on_close;
};
static void destruct _((input_ty *));
static void
destruct(p)
input_ty *p;
{
input_crlf_ty *this;
trace(("input_crlf::destruct()\n{\n"));
this = (input_crlf_ty *)p;
input_pushback_transfer(this->fp, p);
if (this->delete_on_close)
input_delete(this->fp);
this->fp = 0; /* paranoia */
trace(("}\n"));
}
static int get _((input_ty *));
static int
get(p)
input_ty *p;
{
input_crlf_ty *this;
int c;
trace(("input_crlf::get()\n{\n"));
this = (input_crlf_ty *)p;
c = input_getc(this->fp);
if (c == '\r')
{
c = input_getc(this->fp);
if (c != '\n')
{
input_ungetc(this->fp, c);
c = '\r';
}
}
#ifdef DEBUG
if (c == INPUT_EOF)
trace(("return EOF;\n"));
else if (c >= ' ' && c <= '~')
trace(("return '%c';\n", c));
else
trace(("return 0x%02X;\n", c));
#endif
trace(("}\n"));
return c;
}
static string_ty *filename _((input_ty *));
static string_ty *
filename(p)
input_ty *p;
{
input_crlf_ty *this;
trace(("input_crlf::filename\n"));
this = (input_crlf_ty *)p;
return input_filename(this->fp);
}
static input_vtbl_ty vtbl =
{
sizeof(input_crlf_ty),
destruct,
input_generic_read,
get,
filename,
};
input_ty *
input_crlf(fp, delete_on_close)
input_ty *fp;
int delete_on_close;
{
input_ty *result;
input_crlf_ty *this;
trace(("input_crlf(fp = %08lX)\n{\n", (long)fp));
result = input_new(&vtbl);
this = (input_crlf_ty *)result;
this->fp = fp;
this->delete_on_close = delete_on_close;
trace(("return %08lX\n", (long)result));
trace(("}\n"));
return result;
}
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