71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 1996, 1997, 1998 Shigio Yamaguchi. All rights reserved.
|
|
*
|
|
* 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 Shigio Yamaguchi.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* usable.c 22-Jun-98
|
|
*
|
|
*/
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "locatestring.h"
|
|
#include "gparam.h"
|
|
#include "makepath.h"
|
|
#include "test.h"
|
|
#include "usable.h"
|
|
|
|
/*
|
|
* usable: check executable or not about the command.
|
|
*
|
|
* i) command
|
|
* r) 1: executable
|
|
* 0: non executable
|
|
*/
|
|
int
|
|
usable(command)
|
|
char *command;
|
|
{
|
|
char buf[MAXENVLEN+1], *p, *dir;
|
|
|
|
if (*command == '/' || locatestring(command, "./", MATCH_AT_FIRST) || locatestring(command, "../", MATCH_AT_FIRST))
|
|
return test("fx", command);
|
|
|
|
strcpy(buf, getenv("PATH"));
|
|
p = buf;
|
|
while (p) {
|
|
dir = p;
|
|
if ((p = locatestring(p, ":", MATCH_FIRST)) != NULL)
|
|
*p++ = 0;
|
|
if (test("fx", makepath(dir, command)))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|