132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1983, 1993
|
||
|
|
* The Regents of the University of California. All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to Berkeley by
|
||
|
|
* Edward Wang at The University of California, Berkeley.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by the University of
|
||
|
|
* California, Berkeley and its contributors.
|
||
|
|
* 4. Neither the name of the University nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef lint
|
||
|
|
static char sccsid[] = "@(#)context.c 8.1 (Berkeley) 6/6/93";
|
||
|
|
#endif /* not lint */
|
||
|
|
|
||
|
|
#include "value.h"
|
||
|
|
#include "string.h"
|
||
|
|
#include "context.h"
|
||
|
|
#include <fcntl.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Context push/pop for nested command files.
|
||
|
|
*/
|
||
|
|
|
||
|
|
char *malloc();
|
||
|
|
|
||
|
|
cx_alloc()
|
||
|
|
{
|
||
|
|
register struct context *xp;
|
||
|
|
|
||
|
|
if (cx.x_type != 0) {
|
||
|
|
xp = (struct context *)
|
||
|
|
malloc((unsigned) sizeof (struct context));
|
||
|
|
if (xp == 0)
|
||
|
|
return -1;
|
||
|
|
*xp = cx;
|
||
|
|
cx.x_link = xp;
|
||
|
|
cx.x_type = 0;
|
||
|
|
}
|
||
|
|
cx.x_erred = 0;
|
||
|
|
cx.x_synerred = 0;
|
||
|
|
cx.x_abort = 0;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
cx_free()
|
||
|
|
{
|
||
|
|
struct context *xp;
|
||
|
|
|
||
|
|
if ((xp = cx.x_link) != 0) {
|
||
|
|
cx = *xp;
|
||
|
|
free((char *)xp);
|
||
|
|
} else
|
||
|
|
cx.x_type = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
cx_beginfile(filename)
|
||
|
|
char *filename;
|
||
|
|
{
|
||
|
|
if (cx_alloc() < 0)
|
||
|
|
return -1;
|
||
|
|
cx.x_type = X_FILE;
|
||
|
|
if ((cx.x_filename = str_cpy(filename)) == 0)
|
||
|
|
goto bad;
|
||
|
|
cx.x_fp = fopen(filename, "r");
|
||
|
|
if (cx.x_fp == 0)
|
||
|
|
goto bad;
|
||
|
|
(void) fcntl(fileno(cx.x_fp), F_SETFD, 1);
|
||
|
|
cx.x_bol = 1;
|
||
|
|
cx.x_lineno = 0;
|
||
|
|
cx.x_errwin = 0;
|
||
|
|
cx.x_noerr = 0;
|
||
|
|
return 0;
|
||
|
|
bad:
|
||
|
|
if (cx.x_filename != 0)
|
||
|
|
str_free(cx.x_filename);
|
||
|
|
cx_free();
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
cx_beginbuf(buf, arg, narg)
|
||
|
|
char *buf;
|
||
|
|
struct value *arg;
|
||
|
|
int narg;
|
||
|
|
{
|
||
|
|
if (cx_alloc() < 0)
|
||
|
|
return -1;
|
||
|
|
cx.x_type = X_BUF;
|
||
|
|
cx.x_bufp = cx.x_buf = buf;
|
||
|
|
cx.x_arg = arg;
|
||
|
|
cx.x_narg = narg;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
cx_end()
|
||
|
|
{
|
||
|
|
switch (cx.x_type) {
|
||
|
|
case X_BUF:
|
||
|
|
break;
|
||
|
|
case X_FILE:
|
||
|
|
(void) fclose(cx.x_fp);
|
||
|
|
str_free(cx.x_filename);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
cx_free();
|
||
|
|
}
|