2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
13 static const char sccsid[] = "$Id: ex_source.c,v 10.17 2011/12/19 16:17:06 zy Exp $";
16 #include <sys/types.h>
17 #include <sys/queue.h>
20 #include <bitstring.h>
29 #include "../common/common.h"
32 * ex_source -- :source file
33 * Execute ex commands from a file.
35 * PUBLIC: int ex_source __P((SCR *, EXCMD *));
38 ex_source(SCR *sp, EXCMD *cmdp)
49 INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1, name, nlen);
50 if ((fd = open(name, O_RDONLY, 0)) < 0 || fstat(fd, &sb))
55 * I'd like to test to see if the file is too large to malloc. Since
56 * we don't know what size or type off_t's or size_t's are, what the
57 * largest unsigned integral type is, or what random insanity the local
58 * C compiler will perpetrate, doing the comparison in a portable way
59 * is flatly impossible. So, put an fairly unreasonable limit on it,
60 * I don't want to be dropping core here.
62 #define MEGABYTE 1048576
63 if (sb.st_size > MEGABYTE) {
68 MALLOC(sp, bp, char *, (size_t)sb.st_size + 1);
73 bp[sb.st_size] = '\0';
75 /* Read the file into memory. */
76 len = read(fd, bp, (int)sb.st_size);
78 if (len == -1 || len != sb.st_size) {
79 if (len != sb.st_size)
82 err: msgq_str(sp, M_SYSERR, name, "%s");
87 if (CHAR2INT(sp, bp, (size_t)sb.st_size + 1, wp, wlen))
88 msgq(sp, M_ERR, "323|Invalid input. Truncated.");
89 /* Put it on the ex queue. */
90 rc = ex_run_str(sp, np, wp, wlen - 1, 1, 0);