b8ba871bd9
files, curses, db, regex etc that we already have). The other glue will follow shortly. Obtained from: Keith Bostic <bostic@bostic.com>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)ex_source.c 10.12 (Berkeley) 8/10/96";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <bitstring.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "../common/common.h"
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/*
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* ex_source -- :source file
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* Execute ex commands from a file.
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*
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* PUBLIC: int ex_source __P((SCR *, EXCMD *));
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*/
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int
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ex_source(sp, cmdp)
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SCR *sp;
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EXCMD *cmdp;
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{
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struct stat sb;
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int fd, len;
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char *bp, *name;
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name = cmdp->argv[0]->bp;
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if ((fd = open(name, O_RDONLY, 0)) < 0 || fstat(fd, &sb))
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goto err;
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/*
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* XXX
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* I'd like to test to see if the file is too large to malloc. Since
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* we don't know what size or type off_t's or size_t's are, what the
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* largest unsigned integral type is, or what random insanity the local
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* C compiler will perpetrate, doing the comparison in a portable way
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* is flatly impossible. So, put an fairly unreasonable limit on it,
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* I don't want to be dropping core here.
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*/
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#define MEGABYTE 1048576
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if (sb.st_size > MEGABYTE) {
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errno = ENOMEM;
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goto err;
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}
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MALLOC(sp, bp, char *, (size_t)sb.st_size + 1);
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if (bp == NULL) {
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(void)close(fd);
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return (1);
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}
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bp[sb.st_size] = '\0';
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/* Read the file into memory. */
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len = read(fd, bp, (int)sb.st_size);
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(void)close(fd);
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if (len == -1 || len != sb.st_size) {
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if (len != sb.st_size)
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errno = EIO;
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free(bp);
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err: msgq_str(sp, M_SYSERR, name, "%s");
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return (1);
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}
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/* Put it on the ex queue. */
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return (ex_run_str(sp, name, bp, (size_t)sb.st_size, 1, 1));
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}
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