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/*
* terminfo.c - parameter interface to terminfo via curses
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 2000 Sven Wishnowsky, Clint Adams
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and to distribute modified versions of this software for any
* purpose, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* In no event shall Sven Wishnowsky, Clint Adams or the Zsh Development Group
* be liable to any party for direct, indirect, special, incidental, or
* consequential damages arising out of the use of this software and its
* documentation, even if Sven Wishnowsky, Clint Adams and the Zsh
* Development Group have been advised of the possibility of such damage.
*
* Sven Wishnowsky, Clint Adams and the Zsh Development Group specifically
* disclaim any warranties, including, but not limited to, the implied
* warranties of merchantability and fitness for a particular purpose.
* The software provided hereunder is on an "as is" basis, and Sven
* Wishnowsky, Clint Adams and the Zsh Development Group have no obligation
* to provide maintenance, support, updates, enhancements, or modifications.
*
*/
#include "terminfo.mdh"
#include "terminfo.pro"
static char terminfo_nam[] = "terminfo";
static Param terminfo_pm;
/* echoti: output a terminfo capability */
/**/
int
bin_echoti(char *name, char **argv, char *ops, int func)
{
char *s, *t;
int num;
s = *argv++;
/* This depends on the termcap stuff in init.c */
if (termflags & TERM_BAD)
return 1;
if ((termflags & TERM_UNKNOWN) && (isset(INTERACTIVE) || !init_term()))
return 1;
/* if the specified capability has a numeric value, display it */
if (((num = tigetnum(s)) != -1) && (num != -2)) {
printf("%d\n", num);
return 0;
}
switch (tigetflag(s)) {
case -1:
break;
case 0:
puts("no");
return 0;
default:
puts("yes");
return 0;
}
/* get a string-type capability */
t = (char *)tigetstr(s);
if (!t || t == (char *)-1 || !*t) {
/* capability doesn't exist, or (if boolean) is off */
zwarnnam(name, "no such terminfo capability: %s", s, 0);
return 1;
}
tputs(t, 1, putchar);
return 0;
}
static struct builtin bintab[] = {
BUILTIN("echoti", 0, bin_echoti, 1, -1, 0, NULL, NULL),
};
/* This says if we are cleaning up when the module is unloaded. */
static int incleanup;
/* Empty dummy function for special hash parameters. */
/**/
static void
shempty(void)
{
}
/* Create a simple special hash parameter. */
/**/
static Param
createtihash()
{
Param pm;
HashTable ht;
unsetparam(terminfo_nam);
if (!(pm = createparam(terminfo_nam, PM_SPECIAL|PM_HIDE|PM_HIDEVAL|
PM_REMOVABLE|PM_HASHED)))
return NULL;
pm->level = pm->old ? locallevel : 0;
pm->gets.hfn = hashgetfn;
pm->sets.hfn = hashsetfn;
pm->unsetfn = stdunsetfn;
pm->u.hash = ht = newhashtable(7, terminfo_nam, NULL);
ht->hash = hasher;
ht->emptytable = (TableFunc) shempty;
ht->filltable = NULL;
ht->addnode = (AddNodeFunc) shempty;
ht->getnode = ht->getnode2 = getterminfo;
ht->removenode = (RemoveNodeFunc) shempty;
ht->disablenode = NULL;
ht->enablenode = NULL;
ht->freenode = (FreeNodeFunc) shempty;
ht->printnode = printparamnode;
ht->scantab = scanterminfo;
return (terminfo_pm = pm);
}
/**/
static HashNode
getterminfo(HashTable ht, char *name)
{
int len, num;
char *tistr;
Param pm = NULL;
/* This depends on the termcap stuff in init.c */
if (termflags & TERM_BAD)
return NULL;
if ((termflags & TERM_UNKNOWN) && (isset(INTERACTIVE) || !init_term()))
return NULL;
unmetafy(name, &len);
pm = (Param) zhalloc(sizeof(struct param));
pm->nam = dupstring(name);
pm->flags = PM_READONLY;
pm->sets.cfn = NULL;
pm->gets.cfn = strgetfn;
pm->unsetfn = NULL;
pm->ct = 0;
pm->env = NULL;
pm->ename = NULL;
pm->old = NULL;
pm->level = 0;
if (((num = tigetnum(name)) != -1) && (num != -2)) {
pm->u.val = num;
pm->flags |= PM_INTEGER;
}
else if ((num = tigetflag(name)) != -1) {
pm->u.str = num ? dupstring("yes") : dupstring("no");
pm->flags |= PM_SCALAR;
}
else if ((tistr = (char *)tigetstr(name)) != NULL)
{
pm->u.str = dupstring(tistr);
pm->flags |= PM_SCALAR;
}
else
{
zwarn("no such capability: %s", name, 0);
pm->u.str = dupstring("");
pm->flags |= PM_UNSET;
}
return (HashNode) pm;
}
/**/
static void
scanterminfo(HashTable ht, ScanFunc func, int flags)
{
}
/**/
int
setup_(Module m)
{
incleanup = 0;
return 0;
}
/**/
int
boot_(Module m)
{
setupterm((char *)0, 1, (int *)0);
return !createtihash() || !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
}
/**/
int
cleanup_(Module m)
{
Param pm;
incleanup = 1;
if ((pm = (Param) paramtab->getnode(paramtab, terminfo_nam)) &&
pm == terminfo_pm) {
pm->flags &= ~PM_READONLY;
unsetparam_pm(pm, 0, 1);
}
deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
return 0;
}
/**/
int
finish_(Module m)
{
return 0;
}
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