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123 lines
4 KiB
Text
123 lines
4 KiB
Text
// list.gib
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//
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// "list" routines for GIB in QuakeForge 0.5.1
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//
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// Copyright (C) 2002 Brian Koropoff
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// Hash-like functions
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// Note: at first I thought using a bunch of cvars to
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// hold lists was stupid, but then I realized that
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// hashes are used for it internally anyway. The only
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// problem is that everything is in one namespace, increasing
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// the number of collisions. The hash size for cvars should
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// probably be increased for this purpose
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// ***************************************************************
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// list_set
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// Sets the value of an element of a list with a certain key.
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// Usage: list_set list_name key value
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// Returns: Nothing.
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// ***************************************************************
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alias list_set {
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set qlist_${1}_${2} $3
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}
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// **********************************************************
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// list_get
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// Fetches the value of an element of a list by its key.
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// Usage: list_get list_name key
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// Returns: the value of the element
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// **********************************************************
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alias list_get {
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return ${qlist_${1}_${2}}
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}
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// Array-like functions
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// **********************************************************
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// list_reset
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// Resets a list to zero-size (does not delete elements)
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// **********************************************************
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alias list_reset {
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set qlist_${1}_size 0;
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}
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// *****************************************************
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// list_add
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// Adds an element to the end of an array-like list
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// *****************************************************
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alias list_add { // Drop something into the end of a list
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ifnot ${qlist_${1}_size} { // Make sure _size exists and has a numeric value
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set qlist_${1}_size 0
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}
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set qlist_${1}_size #{${qlist_${1}_size}+1}; // Increment size
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set qlist_${1}_${qlist_${1}_size} $2; // Set value
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}
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// *********************************************************
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// list_remove
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// Removes an element from an array-like list and moves
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// all elements after it down one.
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// FIXME: Add list_insert and figure out some way
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// to delete old elements (cvar_delete?)
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// *********************************************************
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alias list_remove { // Remove something from a numbered list
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if #{~{list_get $1 size}==0} return;
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for {i = $2; #{$i<${qlist_${1}_size}}; i = #{$i+1}} {
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list_set $1 $i ~{list_get $1 #{$i+1}};
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};
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list_set $1 size #{~{list_get $1 size}-1};
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}
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// ****************************************************************
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// list_find
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// Locates either the first element of a list that matches
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// a string or the first element starting at a specific index.
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// ****************************************************************
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alias list_find { // Returns the index of a string in a list
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ifnot ${qlist_${1}_size} {
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return 0;
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}
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// This is an evil for statement. You have been warned.
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for {if #{$argn > 3} {i = $2} else {i = 1}; #{$i<=~{list_get $1 size}}; i = #{$i+1}} {
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if ~{streq $2 ~{list_get $1 $i}} {
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return $i;
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};
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};
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return 0;
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}
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// ************************************************************
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// list_grab
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// Chooses and returns a random element from an array-like
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// list. Fun, but not that useful.
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// ************************************************************
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alias list_grab { // Get a random element
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ifnot ${qlist_${1}_size} {
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return 0;
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}
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number = ~{randint 1 ~{list_get $1 size}};
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return ~{list_get $1 $number};
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}
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