colobot/src/script/script.cpp

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/*
* This file is part of the Colobot: Gold Edition source code
* Copyright (C) 2001-2014, Daniel Roux, EPSITEC SA & TerranovaTeam
* http://epsiteс.ch; http://colobot.info; http://github.com/colobot
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://gnu.org/licenses
*/
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#include "script/script.h"
#include "app/pausemanager.h"
#include "common/restext.h"
#include "common/stringutils.h"
#include "common/resources/inputstream.h"
#include "common/resources/outputstream.h"
#include "common/resources/resourcemanager.h"
#include "graphics/engine/engine.h"
#include "graphics/engine/text.h"
#include "level/robotmain.h"
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#include "object/old_object.h"
#include "script/cbottoken.h"
#include "ui/displaytext.h"
#include "ui/controls/edit.h"
#include "ui/controls/interface.h"
#include "ui/controls/list.h"
const int CBOT_IPF = 100; // CBOT: default number of instructions / frame
// Object's constructor.
CScript::CScript(COldObject* object)
{
assert(object->Implements(ObjectInterfaceType::Programmable));
m_object = object;
assert(m_object->Implements(ObjectInterfaceType::TaskExecutor));
m_taskExecutor = dynamic_cast<CTaskExecutorObject*>(m_object);
m_engine = Gfx::CEngine::GetInstancePointer();
m_main = CRobotMain::GetInstancePointer();
m_terrain = m_main->GetTerrain();
m_water = m_engine->GetWater();
m_interface = m_main->GetInterface();
m_pause = CPauseManager::GetInstancePointer();
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m_botProg = nullptr;
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m_ipf = CBOT_IPF;
m_errMode = ERM_STOP;
m_len = 0;
m_script = nullptr;
m_bRun = false;
m_bStepMode = false;
m_bCompile = false;
m_title[0] = 0;
m_mainFunction[0] = 0;
m_cursor1 = 0;
m_cursor2 = 0;
m_filename[0] = 0;
}
// Object's destructor.
CScript::~CScript()
{
delete m_botProg;
m_botProg = nullptr;
delete[] m_script;
m_script = nullptr;
m_len = 0;
}
// Gives the script editable block of text.
void CScript::PutScript(Ui::CEdit* edit, const char* name)
{
if ( m_script == nullptr )
{
New(edit, name);
}
else
{
edit->SetText(m_script);
edit->SetCursor(m_cursor2, m_cursor1);
edit->ShowSelect();
}
m_interface->SetFocus(edit);
}
// The script takes a paved text.
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bool CScript::GetScript(Ui::CEdit* edit)
{
int len;
delete[] m_script;
m_script = nullptr;
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len = edit->GetTextLength();
m_script = new char[len+1];
edit->GetText(m_script, len+1);
edit->GetCursor(m_cursor2, m_cursor1);
m_len = strlen(m_script);
if ( !CheckToken() )
{
edit->SetCursor(m_cursor2, m_cursor1);
edit->ShowSelect();
m_interface->SetFocus(edit);
return false;
}
if ( !Compile() )
{
edit->SetCursor(m_cursor2, m_cursor1);
edit->ShowSelect();
m_interface->SetFocus(edit);
return false;
}
return true;
}
// Indicates whether a program is compiled correctly.
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bool CScript::GetCompile()
{
return m_bCompile;
}
// Indicates whether the program is empty.
bool CScript::IsEmpty()
{
int i;
for ( i=0 ; i<m_len ; i++ )
{
if ( m_script[i] != ' ' &&
m_script[i] != '\n' ) return false;
}
return true;
}
// Checks if a program does not contain the prohibited instructions
// and if it contains well at least once every mandatory instructions.
bool CScript::CheckToken()
{
CBotToken* bt;
CBotToken* allBt;
CBotString bs;
const char* token;
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int error, cursor1, cursor2, i;
char used[100];
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if ( !m_object->GetCheckToken() ) return true;
m_error = 0;
m_title[0] = 0;
m_mainFunction[0] = 0;
m_token[0] = 0;
m_bCompile = false;
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for ( i=0 ; i<m_main->GetObligatoryToken() ; i++ )
{
used[i] = 0; // token not used
}
allBt = CBotToken::CompileTokens(m_script, error);
bt = allBt;
while ( bt != 0 )
{
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bs = bt->GetString();
token = bs;
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cursor1 = bt->GetStart();
cursor2 = bt->GetEnd();
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i = m_main->IsObligatoryToken(token);
if ( i != -1 )
{
used[i] = 1; // token used
}
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if ( !m_main->IsProhibitedToken(token) )
{
m_error = ERR_PROHIBITEDTOKEN;
m_cursor1 = cursor1;
m_cursor2 = cursor2;
strcpy(m_title, "<prohibited>");
m_mainFunction[0] = 0;
CBotToken::Delete(allBt);
return false;
}
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bt = bt->GetNext();
}
// At least once every obligatory instruction?
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for ( i=0 ; i<m_main->GetObligatoryToken() ; i++ )
{
if ( used[i] == 0 ) // token not used?
{
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strcpy(m_token, m_main->GetObligatoryToken(i));
m_error = ERR_OBLIGATORYTOKEN;
strcpy(m_title, "<obligatory>");
m_mainFunction[0] = 0;
CBotToken::Delete(allBt);
return false;
}
}
CBotToken::Delete(allBt);
return true;
}
// Compile the script of a paved text.
bool CScript::Compile()
{
CBotStringArray liste;
int i;
const char* p;
m_error = 0;
m_cursor1 = 0;
m_cursor2 = 0;
m_title[0] = 0;
m_mainFunction[0] = 0;
m_bCompile = false;
if ( IsEmpty() ) // program exist?
{
delete m_botProg;
m_botProg = 0;
return true;
}
if ( m_botProg == 0 )
{
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m_botProg = new CBotProgram(m_object->GetBotVar());
}
if ( m_botProg->Compile(m_script, liste, this) )
{
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if ( liste.GetSize() == 0 )
{
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strcpy(m_title, "<extern missing>");
m_mainFunction[0] = 0;
}
else
{
p = liste[0];
i = 0;
bool titleDone = false;
while ( true )
{
if ( p[i] == 0 || p[i] == '(' ) break;
if ( i >= 20 && !titleDone )
{
m_title[i+0] = '.';
m_title[i+1] = '.';
m_title[i+2] = '.';
m_title[i+3] = 0;
titleDone = true;
}
if(!titleDone)
m_title[i] = p[i];
m_mainFunction[i] = p[i];
i ++;
}
if(!titleDone)
m_title[i] = 0;
m_mainFunction[i] = p[i];
}
m_bCompile = true;
return true;
}
else
{
m_botProg->GetError(m_error, m_cursor1, m_cursor2);
if ( m_cursor1 < 0 || m_cursor1 > m_len ||
m_cursor2 < 0 || m_cursor2 > m_len )
{
m_cursor1 = 0;
m_cursor2 = 0;
}
if ( m_error == 0 )
{
m_cursor1 = m_cursor2 = 0;
}
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strcpy(m_title, "<error>");
m_mainFunction[0] = 0;
return false;
}
}
// Returns the title of the script.
void CScript::GetTitle(char* buffer)
{
strcpy(buffer, m_title);
}
// Choice of mode of execution.
void CScript::SetStepMode(bool bStep)
{
m_bStepMode = bStep;
}
// Runs the program from the beginning.
bool CScript::Run()
{
if( m_botProg == 0 ) return false;
if ( m_script == nullptr || m_len == 0 ) return false;
if ( m_mainFunction[0] == 0 ) return false;
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if ( !m_botProg->Start(m_mainFunction) ) return false;
m_bRun = true;
m_bContinue = false;
m_ipf = CBOT_IPF;
m_errMode = ERM_STOP;
if ( m_bStepMode ) // step by step mode?
{
Step();
}
return true;
}
// Continues the execution of current program.
// Returns true when execution is finished.
bool CScript::Continue()
{
if( m_botProg == 0 ) return true;
if ( !m_bRun ) return true;
if ( m_bStepMode ) // step by step mode?
{
if ( m_bContinue ) // instuction "move", "goto", etc. ?
{
if ( m_botProg->Run(this, 0) )
{
m_botProg->GetError(m_error, m_cursor1, m_cursor2);
if ( m_cursor1 < 0 || m_cursor1 > m_len ||
m_cursor2 < 0 || m_cursor2 > m_len )
{
m_cursor1 = 0;
m_cursor2 = 0;
}
if ( m_error == 0 )
{
m_cursor1 = m_cursor2 = 0;
}
m_bRun = false;
if ( m_error != 0 && m_errMode == ERM_STOP )
{
std::string s;
GetError(s);
m_main->GetDisplayText()->DisplayText(s.c_str(), m_object, 10.0f, Ui::TT_ERROR);
}
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m_pause->SetPause(PAUSE_EDITOR); // gives pause
return true;
}
if ( !m_bContinue )
{
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m_pause->SetPause(PAUSE_EDITOR); // gives pause
}
}
return false;
}
if ( m_botProg->Run(this, m_ipf) )
{
m_botProg->GetError(m_error, m_cursor1, m_cursor2);
if ( m_cursor1 < 0 || m_cursor1 > m_len ||
m_cursor2 < 0 || m_cursor2 > m_len )
{
m_cursor1 = 0;
m_cursor2 = 0;
}
if ( m_error == 0 )
{
m_cursor1 = m_cursor2 = 0;
}
m_bRun = false;
if ( m_error != 0 && m_errMode == ERM_STOP )
{
std::string s;
GetError(s);
m_main->GetDisplayText()->DisplayText(s.c_str(), m_object, 10.0f, Ui::TT_ERROR);
}
return true;
}
return false;
}
// Continues the execution of current program.
// Returns true when execution is finished.
bool CScript::Step()
{
if( m_botProg == 0 ) return true;
if ( !m_bRun ) return true;
if ( !m_bStepMode ) return false;
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// ??? m_engine->SetPause(false);
// TODO: m_app StepSimulation??? m_engine->StepSimulation(0.01f); // advance of 10ms
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// ??? m_engine->SetPause(true);
if ( m_botProg->Run(this, 0) ) // step mode
{
m_botProg->GetError(m_error, m_cursor1, m_cursor2);
if ( m_cursor1 < 0 || m_cursor1 > m_len ||
m_cursor2 < 0 || m_cursor2 > m_len )
{
m_cursor1 = 0;
m_cursor2 = 0;
}
if ( m_error == 0 )
{
m_cursor1 = m_cursor2 = 0;
}
m_bRun = false;
if ( m_error != 0 && m_errMode == ERM_STOP )
{
std::string s;
GetError(s);
m_main->GetDisplayText()->DisplayText(s.c_str(), m_object, 10.0f, Ui::TT_ERROR);
}
return true;
}
if ( m_bContinue ) // instuction "move", "goto", etc. ?
{
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if (m_pause->GetPauseType() == PAUSE_EDITOR)
{
m_pause->ClearPause(); // removes the pause
}
}
return false;
}
// Stops the program.
void CScript::Stop()
{
if ( !m_bRun ) return;
m_taskExecutor->StopForegroundTask();
if( m_botProg != 0 )
{
m_botProg->Stop();
}
m_bRun = false;
}
// Indicates whether the program runs.
bool CScript::IsRunning()
{
return m_bRun;
}
// Indicates whether the program continues a step.
bool CScript::IsContinue()
{
return m_bContinue;
}
// Gives the position of the cursor during the execution.
bool CScript::GetCursor(int &cursor1, int &cursor2)
{
const char* funcName;
cursor1 = cursor2 = 0;
if( m_botProg == 0 ) return false;
if ( !m_bRun ) return false;
m_botProg->GetRunPos(funcName, cursor1, cursor2);
if ( cursor1 < 0 || cursor1 > m_len ||
cursor2 < 0 || cursor2 > m_len )
{
cursor1 = 0;
cursor2 = 0;
}
return true;
}
// Put of the variables in a list.
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void PutList(const char *baseName, bool bArray, CBotVar *var, Ui::CList *list, int &rankList)
{
CBotString bs;
CBotVar *svar, *pStatic;
char varName[100];
char buffer[100];
const char *p;
int index, type;
if ( var == 0 && baseName[0] != 0 )
{
sprintf(buffer, "%s = null;", baseName);
list->SetItemName(rankList++, buffer);
return;
}
index = 0;
while ( var != 0 )
{
var->Maj(NULL, false);
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pStatic = var->GetStaticVar(); // finds the static element
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bs = pStatic->GetName(); // variable name
p = bs;
//? if ( strcmp(p, "this") == 0 )
//? {
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//? var = var->GetNext();
//? continue;
//? }
if ( baseName[0] == 0 )
{
sprintf(varName, "%s", p);
}
else
{
if ( bArray )
{
sprintf(varName, "%s[%d]", baseName, index);
}
else
{
sprintf(varName, "%s.%s", baseName, p);
}
}
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type = pStatic->GetType();
if ( type < CBotTypBoolean )
{
CBotString value;
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value = pStatic->GetValString();
p = value;
sprintf(buffer, "%s = %s;", varName, p);
list->SetItemName(rankList++, buffer);
}
else if ( type == CBotTypString )
{
CBotString value;
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value = pStatic->GetValString();
p = value;
sprintf(buffer, "%s = \"%s\";", varName, p);
list->SetItemName(rankList++, buffer);
}
else if ( type == CBotTypArrayPointer )
{
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svar = pStatic->GetItemList();
PutList(varName, true, svar, list, rankList);
}
else if ( type == CBotTypClass ||
type == CBotTypPointer )
{
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svar = pStatic->GetItemList();
PutList(varName, false, svar, list, rankList);
}
else
{
sprintf(buffer, "%s = ?;", varName);
list->SetItemName(rankList++, buffer);
}
index ++;
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var = var->GetNext();
}
}
// Fills a list with variables.
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void CScript::UpdateList(Ui::CList* list)
{
CBotVar *var;
const char *progName, *funcName;
int total, select, level, cursor1, cursor2, rank;
if( m_botProg == 0 ) return;
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total = list->GetTotal();
select = list->GetSelect();
list->Flush(); // empty list
m_botProg->GetRunPos(progName, cursor1, cursor2);
if ( progName == 0 ) return;
level = 0;
rank = 0;
while ( true )
{
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var = m_botProg->GetStackVars(funcName, level--);
if ( funcName != progName ) break;
PutList("", false, var, list, rank);
}
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if ( total == list->GetTotal() ) // same total?
{
list->SetSelect(select);
}
list->SetTooltip("");
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list->SetState(Ui::STATE_ENABLE);
}
// Colorize the text according to syntax.
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void CScript::ColorizeScript(Ui::CEdit* edit)
{
CBotToken* bt;
CBotString bs;
const char* token;
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int error, type, cursor1, cursor2;
Gfx::FontHighlight color;
edit->ClearFormat();
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bt = CBotToken::CompileTokens(edit->GetText(), error);
while ( bt != 0 )
{
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bs = bt->GetString();
token = bs;
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type = bt->GetType();
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cursor1 = bt->GetStart();
cursor2 = bt->GetEnd();
color = Gfx::FONT_HIGHLIGHT_NONE;
if ( type >= TokenKeyWord && type < TokenKeyWord+100 )
{
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color = Gfx::FONT_HIGHLIGHT_TOKEN;
}
if ( type >= TokenKeyDeclare && type < TokenKeyDeclare+100 )
{
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color = Gfx::FONT_HIGHLIGHT_TYPE;
}
if ( type >= TokenKeyVal && type < TokenKeyVal+100 )
{
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color = Gfx::FONT_HIGHLIGHT_CONST;
}
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if ( type == TokenTypVar || ( type >= TokenKeyWord && type < TokenKeyWord+100 ) || strcmp(token, "this") == 0 )
{
if ( IsType(token) )
{
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color = Gfx::FONT_HIGHLIGHT_TYPE;
}
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else if ( IsFunction(token) || strcmp(token, "this") == 0 )
{
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color = Gfx::FONT_HIGHLIGHT_TOKEN;
}
}
if ( type == TokenTypDef )
{
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color =Gfx::FONT_HIGHLIGHT_CONST;
}
if ( cursor1 < cursor2 && color != Gfx::FONT_HIGHLIGHT_NONE )
{
edit->SetFormat(cursor1, cursor2, color);
}
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bt = bt->GetNext();
}
CBotToken::Delete(bt);
}
// Seeks a token at random in a script.
// Returns the index of the start of the token found, or -1.
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int SearchToken(char* script, const char* token)
{
int lScript, lToken, i, iFound;
int found[100];
char* p;
lScript = strlen(script);
lToken = strlen(token);
iFound = 0;
for ( i=0 ; i<lScript-lToken ; i++ )
{
p = strstr(script+i, token);
if ( p != 0 )
{
found[iFound++] = p-script;
if ( iFound >= 100 ) break;
}
}
if ( iFound == 0 ) return -1;
return found[rand()%iFound];
}
// Removes a token in a script.
void DeleteToken(char* script, int pos, int len)
{
while ( true )
{
script[pos] = script[pos+len];
if ( script[pos++] == 0 ) break;
}
}
// Inserts a token in a script.
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void InsertToken(char* script, int pos, const char* token)
{
int lScript, lToken, i;
lScript = strlen(script);
lToken = strlen(token);
for ( i=lScript ; i>=pos ; i-- )
{
script[i+lToken] = script[i];
}
memcpy(script+pos, token, lToken);
}
// Introduces a virus into a program.
bool CScript::IntroduceVirus()
{
if (m_script == nullptr) return false;
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const char* names[11*2] =
{
"==", "!=",
"!=", "==",
">", "<",
"<", ">",
"true", "false",
"false", "true",
"grab", "drop",
"drop", "grab",
"InFront", "Behind",
"Behind", "EnergyCell",
"EnergyCell", "InFront",
};
int iFound = 0;
int found[11*2];
for ( int i=0 ; i<11 ; i++ )
{
int start = SearchToken(m_script, names[i*2]);
if ( start != -1 )
{
found[iFound++] = i*2;
found[iFound++] = start;
}
}
if ( iFound == 0 ) return false;
int i = (rand()%(iFound/2))*2;
int start = found[i+1];
i = found[i+0];
char* newScript = new char[m_len+strlen(names[i+1])+1];
strcpy(newScript, m_script);
delete[] m_script;
m_script = newScript;
DeleteToken(m_script, start, strlen(names[i]));
InsertToken(m_script, start, names[i+1]);
m_len = strlen(m_script);
Compile(); // recompile with the virus
return true;
}
// Returns the number of the error.
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int CScript::GetError()
{
return m_error;
}
// Returns the text of the error.
void CScript::GetError(std::string& error)
{
if ( m_error == 0 )
{
error.clear();
}
else
{
if ( m_error == ERR_OBLIGATORYTOKEN )
{
std::string s;
GetResource(RES_ERR, m_error, s);
error = StrUtils::Format(s.c_str(), m_token);
}
else if ( m_error < 1000 )
{
GetResource(RES_ERR, m_error, error);
}
else
{
GetResource(RES_CBOT, m_error, error);
}
}
}
// New program.
void CScript::New(Ui::CEdit* edit, const char* name)
{
char res[100];
char text[100];
char script[500];
char buffer[500];
char *sf;
int cursor1, cursor2, len, i, j;
std::string resStr;
GetResource(RES_TEXT, RT_SCRIPT_NEW, resStr);
strcpy(res, resStr.c_str());
if ( name[0] == 0 ) strcpy(text, res);
else strcpy(text, name);
sprintf(script, "extern void object::%s()\n{\n\t\n\t\n\t\n}\n", text);
edit->SetText(script, false);
if ( strcmp(text, res) == 0 )
{
cursor1 = 20;
cursor2 = 20+strlen(text); // update "New"
}
else
{
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if ( edit->GetAutoIndent() )
{
cursor1 = 20+strlen(text)+6;
cursor2 = cursor1; // cursor in { }
}
else
{
cursor1 = 20+strlen(text)+8;
cursor2 = cursor1; // cursor in { }
}
}
edit->SetCursor(cursor2, cursor1);
edit->ShowSelect();
m_interface->SetFocus(edit);
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sf = m_main->GetScriptFile();
if ( sf[0] != 0 ) // Load an empty program specific?
{
std::string filename = sf;
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CInputStream stream;
stream.open(filename);
if (stream.is_open())
{
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len = stream.size();
if ( len > 500-1 ) len = 500-1;
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stream.read(buffer, len);
buffer[len] = 0;
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stream.close();
cursor1 = 0;
i = 0;
j = 0;
while ( true )
{
if ( buffer[i] == 0 ) break;
if ( buffer[i] == '\r' )
{
i ++;
continue;
}
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if ( buffer[i] == '\t' && edit->GetAutoIndent() )
{
i ++;
continue;
}
if ( buffer[i+0] == '%' &&
buffer[i+1] == 's' )
{
strcpy(script+j, text);
j += strlen(text);
i += 2;
continue;
}
if ( buffer[i] == '#' )
{
cursor1 = j;
i ++;
continue;
}
script[j++] = buffer[i++];
}
script[j] = 0;
edit->SetText(script, false);
cursor2 = cursor1;
edit->SetCursor(cursor2, cursor1);
edit->ShowSelect();
m_interface->SetFocus(edit);
}
}
ColorizeScript(edit);
}
// Provided a script for all parts.
bool CScript::SendScript(const char* text)
{
/*m_len = strlen(text);
m_script = new char[m_len+1];
strcpy(m_script, text);
if ( !CheckToken() ) return false;
if ( !Compile() ) return false;*/
Ui::CEdit* edit = m_interface->CreateEdit(Math::Point(0.0f, 0.0f), Math::Point(0.0f, 0.0f), 0, EVENT_EDIT9);
edit->SetMaxChar(Ui::EDITSTUDIOMAX);
edit->SetAutoIndent(m_engine->GetEditIndentMode());
edit->SetText(text, true);
GetScript(edit);
m_interface->DeleteControl(EVENT_EDIT9);
return true;
}
// Reads a script as a text file.
bool CScript::ReadScript(const char* filename)
{
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Ui::CEdit* edit;
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if (!CResourceManager::Exists(filename)) return false;
delete[] m_script;
m_script = nullptr;
edit = m_interface->CreateEdit(Math::Point(0.0f, 0.0f), Math::Point(0.0f, 0.0f), 0, EVENT_EDIT9);
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edit->SetMaxChar(Ui::EDITSTUDIOMAX);
edit->SetAutoIndent(m_engine->GetEditIndentMode());
edit->ReadText(filename);
GetScript(edit);
m_interface->DeleteControl(EVENT_EDIT9);
return true;
}
// Writes a script as a text file.
bool CScript::WriteScript(const char* filename)
{
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Ui::CEdit* edit;
if ( m_script == nullptr )
{
CResourceManager::Remove(filename);
return false;
}
edit = m_interface->CreateEdit(Math::Point(0.0f, 0.0f), Math::Point(0.0f, 0.0f), 0, EVENT_EDIT9);
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edit->SetMaxChar(Ui::EDITSTUDIOMAX);
edit->SetAutoIndent(m_engine->GetEditIndentMode());
edit->SetText(m_script);
edit->WriteText(filename);
m_interface->DeleteControl(EVENT_EDIT9);
return true;
}
// Reads a stack of script by execution as a file.
bool CScript::ReadStack(FILE *file)
{
int nb;
fRead(&nb, sizeof(int), 1, file);
fRead(&m_ipf, sizeof(int), 1, file);
fRead(&m_errMode, sizeof(int), 1, file);
if ( m_botProg == 0 ) return false;
if ( !m_botProg->RestoreState(file) ) return false;
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m_bRun = true;
m_bContinue = false;
return true;
}
// Writes a stack of script by execution as a file.
bool CScript::WriteStack(FILE *file)
{
int nb;
nb = 2;
fWrite(&nb, sizeof(int), 1, file);
fWrite(&m_ipf, sizeof(int), 1, file);
fWrite(&m_errMode, sizeof(int), 1, file);
return m_botProg->SaveState(file);
}
// Compares two scripts.
bool CScript::Compare(CScript* other)
{
if ( m_len != other->m_len ) return false;
return ( strcmp(m_script, other->m_script) == 0 );
}
// Management of the file name when the script is saved.
void CScript::SetFilename(char *filename)
{
strcpy(m_filename, filename);
}
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char* CScript::GetFilename()
{
return m_filename;
}