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/*
Clif - A C-like Interpreter Framework
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997 T. Hruz, L. Koren
1998 L. Koren
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.
*/
/*
* init_rs.c
*
* Initialization of the run string compiler
* and redefinition of its input function.
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "allocx.h"
#ifndef PROTO
#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined(__STDC__)
#define PROTO(ARGS) ARGS
#else
#define PROTO(ARGS) ()
#endif
#endif
#ifndef FLEX_SCANNER
int input_rs_ PROTO((void));
#endif
void init_rs PROTO((int, char *[]));
extern int getcx PROTO((FILE *));
extern void error_message PROTO((int, ...));
extern int fprintfx PROTO((FILE *, char *, ...));
FILE *pfrs;
extern char *argvv[];
static char *argv_rs[200];
static int argc_rs;
#ifndef FLEX_SCANNER
static int argc_rs_pointer = 1,
counter_rs = 0;
#else
static void switch_to_char_buffer PROTO((void));
#endif
char name[]="clif.ini";/* Name of the Clif's initialization file.
* It is always opened.
*/
int yy_rs_wrap PROTO((void));
#ifndef FLEX_SCANNER
/*
* Redefinition of the input for the run string compiler.
*/
int
input_rs_ ()
{
if ((argc_rs_pointer < argc_rs) || (pfrs != NULL))
{
if (pfrs == NULL)
{
if (argv_rs[argc_rs_pointer][counter_rs] != '\0')
{
yy_rs_tchar = yy_rs_sptr > yy_rs_sbuf ?
U_rs_(*--yy_rs_sptr) :
argv_rs[argc_rs_pointer][counter_rs++];
}
else if (++argc_rs_pointer >= argc_rs)
return 0;
else
{
yy_rs_tchar = yy_rs_sptr > yy_rs_sbuf ?
U_rs_(*--yy_rs_sptr) : '\n';
counter_rs = 0;
}
}
else
yy_rs_tchar = yy_rs_sptr > yy_rs_sbuf ?
U_rs_(*--yy_rs_sptr): getcx (pfrs);
if (yy_rs_tchar == 10)
yy_rs_lineno++;
if (yy_rs_tchar == EOF)
{
fclose (pfrs);
pfrs = NULL;
if (argc_rs_pointer < argc_rs)
{
if(argv_rs[argc_rs_pointer][counter_rs] != '\0')
{
yy_rs_tchar = yy_rs_sptr > yy_rs_sbuf ?
U_rs_(*--yy_rs_sptr) :
argv_rs[argc_rs_pointer][counter_rs++];
}
else if ((++argc_rs_pointer) >= argc_rs)
return 0;
else
{
yy_rs_tchar = yy_rs_sptr > yy_rs_sbuf ?
U_rs_(*--yy_rs_sptr) : '\n';
counter_rs = 0;
}
}
else
return 0;
}
return (yy_rs_tchar);
}
else
return 0;
}
#else
static void
switch_to_char_buffer ()
{
register int i, len = 0;
char *str_ptr = NULL;
for (i = 1; i < argc_rs; i++)
{
int tmp_len = strlen (argv_rs[i]);
str_ptr = reallocx (str_ptr, tmp_len + len + 1);
if (str_ptr == NULL)
{
error_message (4002);
return;
}
if (len > 0)
{
str_ptr[len] = ' ';
str_ptr[len + 1] = '\0';
len++;
}
else
str_ptr[0] = '\0';
len += tmp_len;
strcat (str_ptr, argv_rs[i]);
}
if (NULL != str_ptr)
yy_rs__scan_string (str_ptr);
}
#endif
/*
* Initialization of the run string compiler.
*/
void
init_rs (argc1,argv1)
int argc1;
char *argv1[];
{
int b;
if ((argvv[0] = (char *)callocx (1, 6)) == NULL)
{
error_message (4002);
return;
}
strcpy (argvv[0],"stdin");
for (b = 1; b < argc1; b++)
{
if ((argv_rs[b] = (char *)callocx (1, strlen (argv1[b]) + 1))
== NULL)
{
error_message (4002);
return;
}
strcpy (argv_rs[b], argv1[b]);
}
argc_rs = argc1;
pfrs = fopen (name, "r");
if (pfrs == NULL)
fprintfx (stderr, "\nwarning: clif.ini does not exist\n");
#ifdef FLEX_SCANNER
yy_rs_in = pfrs;
#endif
}
/*
* Redefinition of internal yacc function yywrap.
*/
int
yy_rs_wrap ()
{
#ifdef FLEX_SCANNER
static int flag;
if (! flag)
{
switch_to_char_buffer ();
flag = 1;
return 0;
}
#endif
return 1;
}
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