fis-gtm/sr_unix/geteditor.c

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/****************************************************************
* *
* Copyright 2001 Sanchez Computer Associates, Inc. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gtm_string.h"
#include "gtm_stdlib.h"
#include "gtm_stat.h"
#include "eintr_wrappers.h"
#include "geteditor.h"
GBLDEF mstr editor;
void geteditor(void)
{
char *edt, **pedt;
short len;
int stat_res, iter;
struct stat edt_stat;
char *editor_list[] =
{
"/usr/bin/vi",
"/usr/ucb/vi",
"/bin/vi", /* Linux */
0 /* this array should be terminated by a 0 */
};
edt = GETENV("EDITOR");
pedt = &editor_list[0];
do {
STAT_FILE(edt, &edt_stat, stat_res);
if (!stat_res)
break;
edt = *pedt++;
} while (edt);
if (edt)
{
len = strlen(edt) + 1; /* for zero */
editor.len = len - 1; /* but not for mstr */
editor.addr = (char*) malloc(len); /* must be zero term */
memcpy(editor.addr, edt, len);
}
else
editor.len = 0;
}