dtlauncher/dtscript/ScriptRunner.cs
2022-03-13 13:47:40 +03:00

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Net.Sockets;
using System.Linq;
using DTLib;
using DTLib.Filesystem;
using DTLib.Network;
namespace DTScript;
//
// основной класс скриптового интерпретатора
//
public class ScriptRunner
{
// выводит текст через DTLib если дебаг включен
public bool debug = false;
public Socket mainSocket;
public FSP fsp;
internal void Debug(params string[] msg)
{
if (debug) PublicLog.Log(msg);
}
// cчитывание текста из файла и запуск выполнения
public void RunScriptFile(string scriptfile)
{
Debug("g", @"----\ " + scriptfile + " /----\n");
try { Execute(SplitScript(File.ReadAllText(scriptfile))); }
catch (Exception e) { PublicLog.Log("r", $"dtscript RunScriptFile() error:\n{e.Message}\n{e.StackTrace}\n", "gray", " \n"); }
}
int globalindex = -1;
List<Dictionary<string, object>> Storage = new();
object GetValue(string key)
{
Debug("m", "GetValue(", "c", "<", "b", key, "c", ">", "m", ")\n");
for (int i = 0; i <= globalindex; i++)
if (Storage[i].ContainsKey(key)) return Storage[i][key];
throw new Exception($"GetValue() exception: storage doesn't contain key<{key}>");
}
void SetValue(string key, object value)
{
Debug("m", "SetValue(", "c", "<", "b", key, "c", "> ", "c", "<", "b", value.ToString(), "c", ">", "m", ")\n");
for (int i = 0; i <= globalindex; i++)
if (Storage[i].ContainsKey(key))
{
Storage[i][key] = value;
Debug(Storage[i][key].ToString());
return;
}//throw new Exception($"SetValue() exception: storage alredy contains key<{key}>");
Storage[globalindex].Add(key, value);
}
dynamic Execute(List<Construction> script)
{
Debug("y", " executing...\n");
// создание локального
globalindex++;
List<Construction> subscript;
Storage.Add(new Dictionary<string, object>());
// запуск цикла
for (int index = 0; index < script.Count; index++)
{
if (debug)
{
PublicLog.Log(new string[] {
"y","\noperator: ", "m",script[index].Operator, "y"," options: ", "c", "<", "b", script[index].Options[0], "c", ">"});
for (ushort n = 1; n < script[index].Options.Length; n++)
PublicLog.Log("w", ", ", "c", "<", "b", script[index].Options[n], "c", ">");
PublicLog.Log("\n");
}
switch (script[index].Operator)
{
case "return":
Debug("g", "script ended");
return GetValue(script[index].Options[0]);
case "Run":
var proc = new Process();
proc.StartInfo.FileName = script[index].Options[0].Replace("\"", "");
proc.StartInfo.Arguments = script[index].Options[1].Replace("\"", "");
/*if (script[index].Options.Length == 3 && script[index].Options[2] == "true")
{
proc.StartInfo.CreateNoWindow = true;
Debug("g", $"process {script[index].Operator} started in hidden mode\n");
}
else if (script[index].Options.Length == 3 && script[index].Options[2] == "false")
{
proc.StartInfo.CreateNoWindow = false;
Debug("g", $"process {script[index].Operator} started in not hidden mode\n");
}
else throw new Exception("invalid arguments in Run().\n it must be: Run(string exe_file, string arguments, true/false nowindow)\n");
proc.StartInfo.UseShellExecute = false;*/
proc.Start();
proc.WaitForExit();
proc.Close();
break;
case "Log":
Debug("y", $"Log() has {script[index].Options.Length} args\n");
PublicLog.Log(CalcString(script[index].Options.ToList()));
break;
case "ShowFiles":
Debug("y", $"Log() has {script[index].Options.Length} args\n");
foreach (string file in Directory.GetFiles(CalcString(script[index].Options.ToList())))
PublicLog.Log(file + '\n');
break;
case "bool":
if (script[index].Options.Length > 2 && script[index].Options[1] == "=")
{
List<string> expr = new();
for (ushort n = 2; n < script[index].Options.Length; n++)
expr.Add(script[index].Options[n]);
// сравнение и добавление результата в storage[globalindex]
SetValue(script[index].Options[0], Compare(expr));
Debug(new string[] {"y"," bool ","b", script[index].Options[0],
"w", " = ", "c", GetValue(script[index].Options[0]).ToString() + '\n'});
}
else throw new Exception("error: incorrect bool defination\n");
break;
case "num":
if (script[index].Options.Length > 2 && script[index].Options[1] == "=")
{
List<string> expr = new();
for (ushort n = 2; n < script[index].Options.Length; n++)
{
expr.Add(script[index].Options[n]);
}
SetValue(script[index].Options[0], (double)Calc(expr));
Debug(new string[] {"y"," num ","b", script[index].Options[0],
"w", " = ", "c", GetValue(script[index].Options[0]).ToString() + '\n'});
}
else throw new Exception("Execute() error: incorrect double defination\n");
break;
case "string":
if (script[index].Options.Length > 2 && script[index].Options[1] == "=")
{
List<string> expr = new();
for (ushort n = 2; n < script[index].Options.Length; n++)
{
expr.Add(script[index].Options[n]);
}
SetValue(script[index].Options[0], CalcString(expr));
Debug(new string[] {"y"," string ","b", script[index].Options[0],
"w", " = ", "c", GetValue(script[index].Options[0]).ToString() + '\n'});
}
break;
case "while":
if (script[index + 1].Operator != "{") throw new Exception("Execute() error: expect { after for()");
subscript = SplitScript(script[index + 1].Options[0]);
while (Compare(script[index].Options.ToList()))
{
Execute(subscript);
}
index++;
break;
case "if":
if (script[index + 1].Operator != "{") throw new Exception("Execute() error: expect { after for()");
subscript = SplitScript(script[index + 1].Options[0]);
if (Compare(script[index].Options.ToList()))
{
Execute(subscript);
}
index++;
break;
case "Download":
if (fsp is null) fsp = new(mainSocket);
fsp.DownloadFile(script[index].Options[0], script[index].Options[1]);
break;
case "DirDelete":
Directory.Delete(script[index].Options[0]);
break;
case "FileDelete":
File.Delete(script[index].Options[0]);
break;
case "FileWrite":
File.Create(script[index].Options[0]);
File.WriteAllText(script[index].Options[0], script[index].Options[1]);
break;
case "FileAppend":
File.Create(script[index].Options[0]);
File.AppendAllText(script[index].Options[0], script[index].Options[1]);
break;
default:
throw new Exception($"Execute() error: invalid construct: {script[index].Operator}\n");
}
}
Storage.RemoveAt(globalindex);
globalindex--;
return null;
// операции со строками
string CalcString(List<string> expr)
{
Debug("m", "CalcString(");
foreach (string part in expr)
Debug("c", "<", "b", part, "c", ">");
Debug("m", ")", "y", " started\n");
// извлечение значений переменных
for (ushort n = 0; n < expr.Count; n++)
{
switch (expr[n][0])
{
case '+':
break;
case '"':
if (!expr[n].EndsWith("\"")) throw new Exception("Calc() error: invalid value <" + expr[n] + ">\n");
break;
default:
expr[n] = GetValue(expr[n]).ToString();
break;
}
}
// вычисление
string rezult = "";
for (ushort i = 0; i < expr.Count; i++)
{
if (expr[i] == "+")
{
i++;
rezult += expr[i];
}
else rezult = i == 0 ? expr[0] : throw new Exception($"error in Calc(): arg {expr[i]}\n");
}
if (rezult.Contains("\\n")) rezult = rezult.Replace("\\n", "\n");
if (rezult.Contains("\"")) rezult = rezult.Replace("\"", "");
Debug("y", " returns <", "b", $"{rezult}", "y", ">\n");
return rezult;
}
// операции с числами
double Calc(List<string> expr)
{
Debug("m", "Calc(");
foreach (string part in expr)
Debug("c", "<", "b", part, "c", ">");
Debug("m", ")", "y", " started\n");
// извлечение значений переменных
for (ushort n = 0; n < expr.Count; n++)
{
switch (expr[n][0])
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '+':
case '-':
case '*':
case '/':
break;
default:
expr[n] = GetValue(expr[n]).ToString();
break;
}
}
// вычисление
double rezult = new();
for (ushort i = 0; i < expr.Count; i++)
switch (expr[i][0])
{
case '+':
i++;
rezult += Convert.ToDouble(expr[i]);
break;
case '-':
i++;
rezult -= Convert.ToDouble(expr[i]);
break;
case '*':
i++;
rezult *= Convert.ToDouble(expr[i]);
break;
case '/':
i++;
rezult /= Convert.ToDouble(expr[i]);
break;
default:
if (i == 0) rezult += Convert.ToDouble(expr[i]);
else throw new Exception($"error in Calc(): arg {expr[i]}\n");
break;
}
Debug("y", " returns <", "b", $"{rezult}", "y", ">\n");
return rezult;
}
// сравнение
bool Compare(List<string> expr)
{
Debug("m", "Compare(");
foreach (string part in expr)
Debug("c", "<", "b", part, "c", ">");
Debug("m", ")", "y", " started\n");
// вычисление значений правой и левой части неравенства
char act = '\0';
double rezult_0 = new(), rezult_1;
var _expr = new List<string>();
for (ushort n = 0; n < expr.Count; n++)
{
Debug("m", $" <{expr[n]}>\n");
switch (expr[n][0])
{
case '<':
case '>':
act = expr[n][0];
rezult_0 = Calc(_expr);
_expr.Clear();
break;
case '!':
case '=':
act = expr[n][0];
rezult_0 = Calc(_expr);
_expr.Clear();
n++;
break;
default:
_expr.Add(expr[n]);
break;
}
}
Debug("y", " rezult_0 = <", "b", rezult_0.ToString(), "y", ">\n");
rezult_1 = Calc(_expr);
Debug("y", " rezult_1 = <", "b", rezult_1.ToString(), "y", ">\n");
Debug("y", " act = <", "b", act.ToString(), "y", ">\n");
bool output = act switch
{
'<' => rezult_0 < rezult_1,
'>' => rezult_0 > rezult_1,
'!' => rezult_0 != rezult_1,
'=' => rezult_0 == rezult_1,
_ => throw new Exception($"error: incorrect comparsion symbol: <{act}>\n"),
};
Debug("y", " return <", "c", $"{output}", "y", ">\n");
return output;
}
}
List<Construction> SplitScript(string text)
{
// лист для хранения обработанного текста
List<Construction> script = new();
string construct = "";
string option = "";
List<string> options = new();
for (int index = 0; index < text.Length; index++)
{
switch (text[index])
{
// конец распознания конструкта
case ';':
Debug(text[index].ToString() + '\n');
// добавление конструкта и его параметров в лист
if (construct != "") script.Add(new Construction(construct, options));
construct = "";
option = "";
options.Clear();
break;
// распознание параметров конструкта
case '(':
Debug(text[index].ToString());
while (text[index] != ')')
{
index++;
switch (text[index])
{
case '"':
Debug("g", text[index].ToString());
do
{
option += text[index];
index++;
Debug("g", text[index].ToString());
} while (text[index] != '"');
option += text[index];
break;
case ' ':
case '\t':
case '\r':
case '\n':
break;
case ')':
case ',':
Debug(text[index].ToString());
options.Add(option);
option = "";
break;
// математика
case '+':
case '-':
case '*':
case '/':
case '!':
case '=':
Debug(text[index].ToString());
if (option != "") options.Add(option);
option = "";
options.Add(text[index].ToString());
break;
default:
option += text[index];
Debug("c", text[index].ToString());
break;
}
}
if (debug && text[index + 1] == ';') PublicLog.Log("y", "\n " + options.Count + " options have read\n");
break;
// очистка конструкта от лишних символов
case ' ':
case '\t':
case '\r':
case '\n':
break;
//
case '{':
Debug("SplitScript() found <{>");
// добавление конструкта и его параметров в лист
if (construct != "") script.Add(new Construction(construct, options));
options.Clear();
option = "";
construct = "";
index++;
short bracketBalance = 1;
while (bracketBalance != 0)
{
if (text[index] == '{') bracketBalance++;
if (text[index] == '}') bracketBalance--;
option += text[index];
index++;
}
option.Remove(option.Length - 1);
script.Add(new Construction("{", new List<string> { option }));
option = "";
break;
case '}':
//throw new Exception($"SplitScript() error: unexpected '}}' on line {line}\n");
break;
default:
construct += text[index];
Debug("m", text[index].ToString());
break;
}
}
// возврат листа
return script;
}
class Construction
{
public string Operator { get; private set; }
public string[] Options { get; private set; }
public Construction(string oper, List<string> opts)
{
Operator = oper;
Options = opts.ToArray();
}
}
}