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/*
* Copyright (c) 1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND CARNEGIE MELLON UNIVERSITY
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
* SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Users of this software agree to return to Carnegie Mellon any
* improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* Export of this software is permitted only after complying with the
* regulations of the U.S. Deptartment of Commerce relating to the
* Export of Technical Data.
*/
/*
* editor -- fork editor to edit some text file
*
* Usage:
* i = editor(file, prompt);
* char *file, *prompt;
* int i;
*
* The editor() routine is used to fork the user's favorite editor.
* There is assumed to be an environment variable named "EDITOR" whose
* value is the name of the favored editor. If the EDITOR parameter is
* missing, some default (see DEFAULTED below) is assumed. The runp()
* routine is then used to find this editor on the searchlist specified
* by the PATH variable (or the default path). "file" is the name of
* the file to be edited and "prompt" is a string (of any length) which
* will be printed in a such a way that the user can see it at least at
* the start of the editing session. editor() returns the value of the
* runp() call.
*
**********************************************************************
* HISTORY
* $Log: editor.c,v $
* Revision 1.2 90/12/11 17:51:56 mja
* Add copyright/disclaimer for distribution.
*
* 22-Nov-85 Glenn Marcy (gm0w) at Carnegie-Mellon University
* Rewritten for 4.2 BSD UNIX.
*
**********************************************************************
*/
#include <libc.h>
#define DEFAULTED "emacs"
int editor(file, prompt)
register char *file, *prompt;
{
register char *editor;
if ((editor = getenv("EDITOR")) == NULL)
editor = DEFAULTED;
if (*prompt) printf("%s\n", prompt);
return(runp(editor, editor, file, 0));
}
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