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/*
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* This file is part of FDNPKG.
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*
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* Reads environment variables that will be used by FDNPKG and FDINST.
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* Returns 0 on success, non-zero otherwise.
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*
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* Copyright (C) 2012-2016 Mateusz Viste
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*/
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#include <stdio.h> /* snprintf() */
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#include <stdlib.h> /* getenv() */
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#include "kprintf.h" /* kprintf(), kputs() */
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#include "readenv.h"
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int readenv(char **dosdir, char **tempdir, char *cfgfile, int cfgfilemaxlen) {
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char *cfg;
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/* check if %DOSDIR% is set, and retrieve it */
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*dosdir = getenv("DOSDIR");
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if (*dosdir == NULL) {
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kitten_puts(2, 2, "%DOSDIR% not set! You should make it point to the FreeDOS main directory.");
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kitten_puts(2, 3, "Example: SET DOSDIR=C:\\FDOS");
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return(-1);
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}
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/* check if %TEMP% is set, and retrieve it */
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*tempdir = getenv("TEMP");
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if (*tempdir == NULL) {
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kitten_puts(2, 0, "%TEMP% not set! You should make it point to a writeable directory.");
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kitten_puts(2, 1, "Example: SET TEMP=C:\\TEMP");
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return(-2);
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}
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/* look for the FDNPKG.CFG env. variable */
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cfg = getenv("FDNPKG.CFG");
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cfgfilemaxlen -= 1; /* make room for the null terminator */
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if (cfg != NULL) {
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snprintf(cfgfile, cfgfilemaxlen, "%s", cfg);
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} else { /* not set, so fallback to hardcoded location */
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snprintf(cfgfile, cfgfilemaxlen, "%s\\bin\\fdnpkg.cfg", *dosdir);
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}
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return(0);
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}
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