corrade-lsl-templates – Rev 42
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///////////////////////////////////////////////////////////////////////////
// Copyright (C) Wizardry and Steamworks 2016 - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
//
// A module that evaluates a mathematical expression for Corrade Eggdrop.
//
///////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 Wizardry and Steamworks - License: CC BY 2.0 //
///////////////////////////////////////////////////////////////////////////
string wasKeyValueGet(string k, string data) {
if(llStringLength(data) == 0) return "";
if(llStringLength(k) == 0) return "";
list a = llParseStringKeepNulls(data, ["&", "="], []);
integer i = llListFindList(llList2ListStrided(a, 0, -1, 2), [ k ]);
if(i != -1) return llList2String(a, 2*i+1);
return "";
}
///////////////////////////////////////////////////////////////////////////
// Copyright (C) 2013 Wizardry and Steamworks - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
string wasKeyValueEncode(list data) {
list k = llList2ListStrided(data, 0, -1, 2);
list v = llList2ListStrided(llDeleteSubList(data, 0, 0), 0, -1, 2);
data = [];
do {
data += llList2String(k, 0) + "=" + llList2String(v, 0);
k = llDeleteSubList(k, 0, 0);
v = llDeleteSubList(v, 0, 0);
} while(llGetListLength(k) != 0);
return llDumpList2String(data, "&");
}
///////////////////////////////////////////////////////////////////////////
// Copyright (C) 2011 Wizardry and Steamworks - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
// http://was.fm/secondlife/wanderer
vector wasCirclePoint(float radius) {
float x = llPow(-1, 1 + (integer) llFrand(2)) * llFrand(radius*2);
float y = llPow(-1, 1 + (integer) llFrand(2)) * llFrand(radius*2);
if(llPow(x,2) + llPow(y,2) <= llPow(radius,2))
return <x, y, 0>;
return wasCirclePoint(radius);
}
///////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
// escapes a string in conformance with RFC1738
string wasURLEscape(string i) {
string o = "";
do {
string c = llGetSubString(i, 0, 0);
i = llDeleteSubString(i, 0, 0);
if(c == "") jump continue;
if(c == " ") {
o += "+";
jump continue;
}
if(c == "\n") {
o += "%0D" + llEscapeURL(c);
jump continue;
}
o += llEscapeURL(c);
@continue;
} while(i != "");
return o;
}
///////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
list wasCSVToList(string csv) {
list l = [];
list s = [];
string m = "";
do {
string a = llGetSubString(csv, 0, 0);
csv = llDeleteSubString(csv, 0, 0);
if(a == ",") {
if(llList2String(s, -1) != "\"") {
l += m;
m = "";
jump continue;
}
m += a;
jump continue;
}
if(a == "\"" && llGetSubString(csv, 0, 0) == a) {
m += a;
csv = llDeleteSubString(csv, 0, 0);
jump continue;
}
if(a == "\"") {
if(llList2String(s, -1) != a) {
s += a;
jump continue;
}
s = llDeleteSubList(s, -1, -1);
jump continue;
}
m += a;
@continue;
} while(csv != "");
// postcondition: length(s) = 0
return l + m;
}
///////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
string wasListToCSV(list l) {
list v = [];
do {
string a = llDumpList2String(
llParseStringKeepNulls(
llList2String(
l,
0
),
["\""],
[]
),
"\"\""
);
if(llParseStringKeepNulls(
a,
[" ", ",", "\n", "\""], []
) !=
(list) a
) a = "\"" + a + "\"";
v += a;
l = llDeleteSubList(l, 0, 0);
} while(l != []);
return llDumpList2String(v, ",");
}
///////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 //
///////////////////////////////////////////////////////////////////////////
// unescapes a string in conformance with RFC1738
string wasURLUnescape(string i) {
return llUnescapeURL(
llDumpList2String(
llParseString2List(
llDumpList2String(
llParseString2List(
i,
["+"],
[]
),
" "
),
["%0D%0A"],
[]
),
"\n"
)
);
}
//////////////////////////////////////////////////////////
// Returns a reversed list.
//////////////////////////////////////////////////////////
list wasListReverse(list lst) {
if(llGetListLength(lst)<=1) return lst;
return wasListReverse(llList2List(lst, 1, llGetListLength(lst))) + llList2List(lst,0,0);
}
//////////////////////////////////////////////////////////
// Deletes elements delete from list input.
//////////////////////////////////////////////////////////
list wasSubtractSubList(list input, list delete) {
do {
string tok = llList2String(delete, 0);
list clean = input;
do {
if(llList2String(clean, 0) == tok) {
integer idx = llListFindList(input, (list)tok);
input = llDeleteSubList(input, idx, idx);
}
} while(clean = llDeleteSubList(clean, 0, 0));
} while(delete = llDeleteSubList(delete, 0, 0));
return input;
}
//////////////////////////////////////////////////////////
// Returns a list of operators and operands.
//////////////////////////////////////////////////////////
list wasInfixTokenize(string input) {
list op = [ "+", "-", "(", ")", "%", "*", "/", "^", "sin", "asin", "cos", "acos", "tan", "sqrt", "ln" ];
list result = llParseString2List(input, [], op);
return wasSubtractSubList(result, [" "]);
}
//////////////////////////////////////////////////////////
// Transforms an infix expression to a postfix expression.
//////////////////////////////////////////////////////////
list wasInfixToPostfix(list infix) {
list op = [ "+", "-", "%", "*", "/", "^", "sin", "asin", "cos", "acos", "tan", "sqrt", "ln" ];
list opStack = [];
list result = [];
do {
string t = llList2String(infix, 0);
infix = llDeleteSubList(infix, 0, 0);
if(t == "(") {
opStack += "(";
jump continue;
}
if(t == ")") {
while(llGetListLength(opStack) != 0) {
string topa = llList2String(opStack, llGetListLength(opStack)-1);
opStack = llDeleteSubList(opStack, llGetListLength(opStack)-1, llGetListLength(opStack)-1);
if(topa != "(" && topa != ")") result += topa;
}
opStack = llDeleteSubList(opStack, llGetListLength(opStack)-1, llGetListLength(opStack)-1);
jump continue;
}
integer idx = llListFindList(op, (list)t);
if(idx == -1) {
result += t;
jump continue;
}
@repeat;
string topb = llList2String(opStack, llGetListLength(opStack)-1);
integer odx = llListFindList(op, (list)topb);
if(odx >= idx) {
opStack = llDeleteSubList(opStack, llGetListLength(opStack)-1, llGetListLength(opStack)-1);
result += topb;
if(llGetListLength(opStack) != 0) jump repeat;
}
opStack += t;
@continue;
} while(llGetListLength(infix) != 0);
result += wasListReverse(opStack);
return result;
}
//////////////////////////////////////////////////////////
// Evaluate a postfix expression.
//////////////////////////////////////////////////////////
float wasPostfixEval(list postfix) {
list op = [ "+", "-", "%", "*", "/", "^", "sin", "asin", "cos", "acos", "tan", "sqrt", "ln" ];
list orStack = [];
do {
string t = llList2String(postfix, 0);
postfix = llDeleteSubList(postfix, 0, 0);
integer idx = llListFindList(op, (list)t);
if(idx == -1) {
orStack += t;
jump continue;
}
float a = llList2Float(orStack, llGetListLength(orStack)-1);
orStack = llDeleteSubList(orStack, llGetListLength(orStack)-1, llGetListLength(orStack)-1);
float b = llList2Float(orStack, llGetListLength(orStack)-1);
float r = 0;
if(t == "+") {
orStack = llDeleteSubList(orStack, llGetListLength(orStack)-1, llGetListLength(orStack)-1);
r = b + a;
jump push;
}
if(t == "-") {
orStack = llDeleteSubList(orStack, llGetListLength(orStack)-1, llGetListLength(orStack)-1);
r = b - a;
jump push;
}
if(t == "*") {
orStack = llDeleteSubList(orStack, llGetListLength(orStack)-1, llGetListLength(orStack)-1);
r = b * a;
jump push;
}
if(t == "/") {
orStack = llDeleteSubList(orStack, llGetListLength(orStack)-1, llGetListLength(orStack)-1);
if(a == 0) {
r = (float)"NaN";
jump push;
}
r = b / a;
jump push;
}
if(t == "^") {
orStack = llDeleteSubList(orStack, llGetListLength(orStack)-1, llGetListLength(orStack)-1);
r = llPow(b,a);
jump push;
}
if(t == "%") {
orStack = llDeleteSubList(orStack, llGetListLength(orStack)-1, llGetListLength(orStack)-1);
r = (integer)b % (integer)a;
jump push;
}
if(t == "sin") {
r = llSin(a * DEG_TO_RAD);
jump push;
}
if(t == "asin") {
r = llAsin(a * DEG_TO_RAD);
jump push;
}
if(t == "cos") {
r = llCos(a * DEG_TO_RAD);
jump push;
}
if(t == "acos") {
r = llAcos(a * DEG_TO_RAD);
jump push;
}
if(t == "tan") {
r = llTan(a * DEG_TO_RAD);
jump push;
}
if(t == "ln") {
r = llLog(a);
jump push;
}
if(t == "sqrt") {
r = llSqrt(a);
}
@push;
orStack += r;
@continue;
} while(llGetListLength(postfix) != 0);
return llList2Float(orStack, 0);
}
// configuration data
string configuration = "";
// store message over state.
string data = "";
// Notecard reading.
key nQuery = NULL_KEY;
integer nLine = 0;
list nList = [];
default {
state_entry() {
llOwnerSay("[Eval] Starting module...");
llSetTimerEvent(10);
}
link_message(integer sender, integer num, string message, key id) {
if(id != "configuration") return;
llOwnerSay("[Eval] Got configuration...");
configuration = message;
state listen_group;
}
timer() {
llOwnerSay("[Eval] Requesting configuration...");
llMessageLinked(LINK_THIS, 0, "configuration", NULL_KEY);
}
on_rez(integer num) {
llResetScript();
}
changed(integer change) {
if((change & CHANGED_INVENTORY) ||
(change & CHANGED_REGION_START) ||
(change & CHANGED_OWNER)) {
llResetScript();
}
}
state_exit() {
llSetTimerEvent(0);
}
}
state listen_group {
state_entry() {
// DEBUG
llOwnerSay("[Eval] Waiting for group messages...");
}
link_message(integer sender, integer num, string message, key id) {
// We only care about notifications now.
if(id != "notification")
return;
// This script only processes group notifications.
if(wasKeyValueGet("type", message) != "group" ||
(wasKeyValueGet("type", message) == "group" &&
wasURLUnescape(wasKeyValueGet("group", message)) !=
wasKeyValueGet("group", configuration)))
return;
// Get the sent message.
data = wasURLUnescape(
wasKeyValueGet(
"message",
message
)
);
// Check if this is an eggdrop command.
if(llGetSubString(data, 0, 0) !=
wasKeyValueGet("command", configuration))
return;
// Check if the command matches the current module.
list command = llParseString2List(data, [" "], []);
if(llList2String(command, 0) !=
wasKeyValueGet("command", configuration) + "eval")
return;
// Remove command.
command = llDeleteSubList(command, 0, 0);
// Dump the rest of the message.
data = (string)wasPostfixEval(
wasInfixToPostfix(
wasInfixTokenize(
llDumpList2String(
command,
" "
)
)
)
);
state tell;
}
on_rez(integer num) {
llResetScript();
}
changed(integer change) {
if((change & CHANGED_INVENTORY) ||
(change & CHANGED_REGION_START) ||
(change & CHANGED_OWNER)) {
llResetScript();
}
}
}
state tell {
state_entry() {
// DEBUG
llOwnerSay("[Eval] Sending to group.");
llInstantMessage(
wasKeyValueGet(
"corrade",
configuration
),
wasKeyValueEncode(
[
"command", "tell",
"group", wasURLEscape(
wasKeyValueGet(
"group",
configuration
)
),
"password", wasURLEscape(
wasKeyValueGet(
"password",
configuration
)
),
"entity", "group",
"message", wasURLEscape(data)
]
)
);
state listen_group;
}
}