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/*
* hashtable.c - hash tables
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 1992-1997 Paul Falstad
* 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 Paul Falstad 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 Paul Falstad and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Paul Falstad 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 Paul Falstad and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
#include "../config.h"
/*
* On Solaris 8 there's a clash between "bool" in curses and RPC.
* We don't need curses here, so ensure it doesn't get included.
*/
#define ZSH_NO_TERM_HANDLING
#include "zsh.mdh"
#include "hashnameddir.pro"
/****************************************/
/* Named Directory Hash Table Functions */
/****************************************/
/* hash table containing named directories */
/**/
mod_export HashTable nameddirtab;
/* != 0 if all the usernames have already been *
* added to the named directory hash table. */
static int allusersadded;
/* Create new hash table for named directories */
/**/
void
createnameddirtable(void)
{
nameddirtab = newhashtable(201, "nameddirtab", NULL);
nameddirtab->hash = hasher;
nameddirtab->emptytable = emptynameddirtable;
nameddirtab->filltable = fillnameddirtable;
nameddirtab->cmpnodes = strcmp;
nameddirtab->addnode = addnameddirnode;
nameddirtab->getnode = gethashnode;
nameddirtab->getnode2 = gethashnode2;
nameddirtab->removenode = removenameddirnode;
nameddirtab->disablenode = NULL;
nameddirtab->enablenode = NULL;
nameddirtab->freenode = freenameddirnode;
nameddirtab->printnode = printnameddirnode;
allusersadded = 0;
finddir(NULL); /* clear the finddir cache */
}
/* Empty the named directories table */
/**/
static void
emptynameddirtable(HashTable ht)
{
emptyhashtable(ht);
allusersadded = 0;
finddir(NULL); /* clear the finddir cache */
}
/* Add all the usernames in the password file/database *
* to the named directories table. */
/**/
static void
fillnameddirtable(UNUSED(HashTable ht))
{
if (!allusersadded) {
#ifdef USE_GETPWENT
struct passwd *pw;
setpwent();
/* loop through the password file/database *
* and add all entries returned. */
while ((pw = getpwent()) && !errflag)
adduserdir(pw->pw_name, pw->pw_dir, ND_USERNAME, 1);
endpwent();
#endif /* USE_GETPWENT */
allusersadded = 1;
}
}
/* Add an entry to the named directory hash *
* table, clearing the finddir() cache and *
* initialising the `diff' member. */
/**/
static void
addnameddirnode(HashTable ht, char *nam, void *nodeptr)
{
Nameddir nd = (Nameddir) nodeptr;
nd->diff = strlen(nd->dir) - strlen(nam);
finddir(NULL); /* clear the finddir cache */
addhashnode(ht, nam, nodeptr);
}
/* Remove an entry from the named directory *
* hash table, clearing the finddir() cache. */
/**/
static HashNode
removenameddirnode(HashTable ht, const char *nam)
{
HashNode hn = removehashnode(ht, nam);
if(hn)
finddir(NULL); /* clear the finddir cache */
return hn;
}
/* Free up the memory used by a named directory hash node. */
/**/
static void
freenameddirnode(HashNode hn)
{
Nameddir nd = (Nameddir) hn;
zsfree(nd->node.nam);
zsfree(nd->dir);
zfree(nd, sizeof(struct nameddir));
}
/* Print a named directory */
/**/
static void
printnameddirnode(HashNode hn, int printflags)
{
Nameddir nd = (Nameddir) hn;
if (printflags & PRINT_NAMEONLY) {
zputs(nd->node.nam, stdout);
putchar('\n');
return;
}
if (printflags & PRINT_LIST) {
printf("hash -d ");
if(nd->node.nam[0] == '-')
printf("-- ");
}
quotedzputs(nd->node.nam, stdout);
putchar('=');
quotedzputs(nd->dir, stdout);
putchar('\n');
}
#include "../config.h"
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