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2113a60c4b
I still have a _very very annoying_ display bug which occurs when a menu item causes a submenu to be displayed - the screen repaints for the original menu (which is restored upon return from the submenu) are off by about 4 characters. I've tried restoring the screen, the cursor position, you name it - same deal. Grrrr! This commit is my first step in trying to get someone else to help me look into this one since I'm just tearing my hair out at this point!
138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/*
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* The new sysinstall program.
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*
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* This is probably the last program in the `sysinstall' line - the next
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* generation being essentially a complete rewrite.
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*
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* $Id: variable.c,v 1.8 1996/04/13 13:32:15 jkh Exp $
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* verbatim and that no modifications are made prior to this
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* point in the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include "sysinstall.h"
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/* Routines for dealing with variable lists */
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static void
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make_variable(char *var, char *value)
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{
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Variable *newvar;
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/* Put it in the environment in any case */
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setenv(var, value, 1);
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/* Now search to see if it's already in the list */
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for (newvar = VarHead; newvar; newvar = newvar->next) {
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if (!strcmp(newvar->name, var)) {
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strncpy(newvar->value, value, VAR_VALUE_MAX);
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return;
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}
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}
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/* No? Create a new one */
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newvar = (Variable *)safe_malloc(sizeof(Variable));
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strncpy(newvar->name, var, VAR_NAME_MAX);
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strncpy(newvar->value, value, VAR_VALUE_MAX);
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newvar->next = VarHead;
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VarHead = newvar;
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if (isDebug())
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msgDebug("Setting variable %s to %s\n", newvar->name, newvar->value);
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}
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void
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variable_set(char *var)
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{
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char tmp[VAR_NAME_MAX + VAR_VALUE_MAX], *cp;
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if (!var)
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msgFatal("NULL variable name & value passed.");
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else if (!*var)
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msgDebug("Warning: Zero length name & value passed to variable_set()\n");
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strncpy(tmp, var, VAR_NAME_MAX + VAR_VALUE_MAX);
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if ((cp = index(tmp, '=')) == NULL)
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msgFatal("Invalid variable format: %s", var);
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*(cp++) = '\0';
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make_variable(tmp, cp);
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}
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void
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variable_set2(char *var, char *value)
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{
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if (!var || !value)
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msgFatal("Null name or value passed to set_variable2!");
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else if (!*var || !*value)
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msgDebug("Warning: Zero length name or value passed to variable_set2()\n");
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make_variable(var, value);
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}
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char *
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variable_get(char *var)
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{
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return getenv(var);
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}
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void
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variable_unset(char *var)
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{
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Variable *vp;
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unsetenv(var);
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/* Now search to see if it's in our list, if we have one.. */
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if (!VarHead)
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return;
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else if (!VarHead->next && !strcmp(VarHead->name, var)) {
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free(VarHead);
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VarHead = NULL;
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}
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else {
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for (vp = VarHead; vp; vp = vp->next) {
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if (!strcmp(vp->name, var)) {
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Variable *save = vp->next;
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*vp = *save;
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safe_free(save);
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break;
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}
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}
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}
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}
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/* Prompt user for the name of a variable */
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char *
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variable_get_value(char *var, char *prompt)
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{
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char *cp;
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if ((cp = msgGetInput(variable_get(var), prompt)) != NULL)
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variable_set2(var, cp);
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else
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cp = NULL;
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return cp;
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}
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