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/*
* zleparameter.c - parameter interface to zle internals
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 1999 Sven Wischnowsky
* 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 Wischnowsky 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 Wischnowsky and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Sven Wischnowsky 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 Wischnowsky and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
#include "zleparameter.mdh"
#include "zleparameter.pro"
/* Empty dummy function for special hash parameters. */
/**/
static void
shempty(void)
{
}
/* Create a simple special hash parameter. */
/**/
static Param
createspecialhash(char *name, GetNodeFunc get, ScanTabFunc scan)
{
Param pm;
HashTable ht;
if (!(pm = createparam(name, PM_SPECIAL|PM_HIDE|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, name, NULL);
ht->hash = hasher;
ht->emptytable = (TableFunc) shempty;
ht->filltable = NULL;
ht->addnode = (AddNodeFunc) shempty;
ht->getnode = ht->getnode2 = get;
ht->removenode = (RemoveNodeFunc) shempty;
ht->disablenode = NULL;
ht->enablenode = NULL;
ht->freenode = (FreeNodeFunc) shempty;
ht->printnode = printparamnode;
ht->scantab = scan;
return pm;
}
/* Functions for the zlewidgets special parameter. */
/**/
static char *
widgetstr(Widget w)
{
if (w->flags & WIDGET_INT)
return dupstring("builtin");
if (w->flags & WIDGET_NCOMP) {
char *t = (char *) zhalloc(13 + strlen(w->u.comp.wid) +
strlen(w->u.comp.func));
strcpy(t, "completion:");
strcat(t, w->u.comp.wid);
strcat(t, ":");
strcat(t, w->u.comp.func);
return t;
}
return dyncat("user:", w->u.fnnam);
}
/**/
static HashNode
getpmwidgets(HashTable ht, char *name)
{
Param pm = NULL;
Thingy th;
HEAPALLOC {
pm = (Param) zhalloc(sizeof(struct param));
pm->nam = dupstring(name);
pm->flags = PM_SCALAR | 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 ((th = (Thingy) thingytab->getnode(thingytab, name)) &&
!(th->flags & DISABLED))
pm->u.str = widgetstr(th->widget);
else {
pm->u.str = dupstring("");
pm->flags |= PM_UNSET;
}
} LASTALLOC;
return (HashNode) pm;
}
/**/
static void
scanpmwidgets(HashTable ht, ScanFunc func, int flags)
{
struct param pm;
int i;
HashNode hn;
pm.flags = PM_SCALAR | 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;
for (i = 0; i < thingytab->hsize; i++)
for (hn = thingytab->nodes[i]; hn; hn = hn->next) {
pm.nam = hn->nam;
if (func != scancountparams &&
(flags & (SCANPM_WANTVALS|SCANPM_MATCHVAL)))
pm.u.str = widgetstr(((Thingy) hn)->widget);
func((HashNode) &pm, flags);
}
}
/* Functions for the zlekeymaps special parameter. */
static char **
keymapsgetfn(Param pm)
{
int i;
HashNode hn;
char **ret, **p;
p = ret = (char **) zhalloc((keymapnamtab->ct + 1) * sizeof(char *));
for (i = 0; i < keymapnamtab->hsize; i++)
for (hn = keymapnamtab->nodes[i]; hn; hn = hn->next)
*p++ = dupstring(hn->nam);
*p = NULL;
return ret;
}
/* Table for defined parameters. */
struct pardef {
char *name;
int flags;
GetNodeFunc getnfn;
ScanTabFunc scantfn;
void (*hsetfn) _((Param, HashTable));
void (*setfn) _((Param, char **));
char **(*getfn) _((Param));
void (*unsetfn) _((Param, int));
Param pm;
};
static struct pardef partab[] = {
{ "widgets", PM_READONLY,
getpmwidgets, scanpmwidgets, hashsetfn,
NULL, NULL, stdunsetfn, NULL },
{ "keymaps", PM_ARRAY|PM_HIDE|PM_SPECIAL|PM_READONLY,
NULL, NULL, NULL,
arrsetfn, keymapsgetfn, stdunsetfn, NULL },
{ NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
};
/**/
int
setup_zleparameter(Module m)
{
return 0;
}
/**/
int
boot_zleparameter(Module m)
{
struct pardef *def;
for (def = partab; def->name; def++) {
unsetparam(def->name);
if (def->getnfn) {
if (!(def->pm = createspecialhash(def->name, def->getnfn,
def->scantfn)))
return 1;
def->pm->flags |= def->flags;
if (def->hsetfn)
def->pm->sets.hfn = def->hsetfn;
} else {
if (!(def->pm = createparam(def->name, def->flags)))
return 1;
def->pm->sets.afn = def->setfn;
def->pm->gets.afn = def->getfn;
def->pm->unsetfn = def->unsetfn;
}
}
return 0;
}
#ifdef MODULE
/**/
int
cleanup_zleparameter(Module m)
{
Param pm;
struct pardef *def;
for (def = partab; def->name; def++) {
if ((pm = (Param) paramtab->getnode(paramtab, def->name)) &&
pm == def->pm) {
pm->flags &= ~PM_READONLY;
unsetparam_pm(pm, 0, 1);
}
}
return 0;
}
/**/
int
finish_zleparameter(Module m)
{
return 0;
}
#endif
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