ddnet/src/engine/shared/console.cpp

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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com. */
#include <new>
#include <base/math.h>
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#include <base/system.h>
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#include <engine/storage.h>
#include <engine/shared/protocol.h>
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#include "config.h"
#include "console.h"
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#include "linereader.h"
const char *CConsole::CResult::GetString(unsigned Index)
{
if (Index < 0 || Index >= m_NumArgs)
return "";
return m_apArgs[Index];
}
int CConsole::CResult::GetInteger(unsigned Index)
{
if (Index < 0 || Index >= m_NumArgs)
return 0;
return str_toint(m_apArgs[Index]);
}
float CConsole::CResult::GetFloat(unsigned Index)
{
if (Index < 0 || Index >= m_NumArgs)
return 0.0f;
return str_tofloat(m_apArgs[Index]);
}
const IConsole::CCommandInfo *CConsole::CCommand::NextCommandInfo(int AccessLevel, int FlagMask) const
{
const CCommand *pInfo = m_pNext;
while(pInfo)
{
if(pInfo->m_Flags&FlagMask && pInfo->m_AccessLevel >= AccessLevel)
break;
pInfo = pInfo->m_pNext;
}
return pInfo;
}
const IConsole::CCommandInfo *CConsole::FirstCommandInfo(int AccessLevel, int FlagMask) const
{
for(const CCommand *pCommand = m_pFirstCommand; pCommand; pCommand = pCommand->m_pNext)
{
if(pCommand->m_Flags&FlagMask && pCommand->GetAccessLevel() >= AccessLevel)
return pCommand;
}
return 0;
}
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// the maximum number of tokens occurs in a string of length CONSOLE_MAX_STR_LENGTH with tokens size 1 separated by single spaces
int CConsole::ParseStart(CResult *pResult, const char *pString, int Length)
{
char *pStr;
int Len = sizeof(pResult->m_aStringStorage);
if(Length < Len)
Len = Length;
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str_copy(pResult->m_aStringStorage, pString, Length);
pStr = pResult->m_aStringStorage;
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// get command
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pStr = str_skip_whitespaces(pStr);
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pResult->m_pCommand = pStr;
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pStr = str_skip_to_whitespace(pStr);
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if(*pStr)
{
pStr[0] = 0;
pStr++;
}
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pResult->m_pArgsStart = pStr;
return 0;
}
int CConsole::ParseArgs(CResult *pResult, const char *pFormat)
{
char Command;
char *pStr;
int Optional = 0;
int Error = 0;
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pStr = pResult->m_pArgsStart;
while(1)
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{
// fetch command
Command = *pFormat;
pFormat++;
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if(!Command)
break;
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if(Command == '?')
Optional = 1;
else
{
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pStr = str_skip_whitespaces(pStr);
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if(!(*pStr)) // error, non optional command needs value
{
if(!Optional)
Error = 1;
break;
}
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// add token
if(*pStr == '"')
{
char *pDst;
pStr++;
pResult->AddArgument(pStr);
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pDst = pStr; // we might have to process escape data
while(1)
{
if(pStr[0] == '"')
break;
else if(pStr[0] == '\\')
{
if(pStr[1] == '\\')
pStr++; // skip due to escape
else if(pStr[1] == '"')
pStr++; // skip due to escape
}
else if(pStr[0] == 0)
return 1; // return error
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*pDst = *pStr;
pDst++;
pStr++;
}
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// write null termination
*pDst = 0;
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pStr++;
}
else
{
pResult->AddArgument(pStr);
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if(Command == 'r') // rest of the string
break;
else if(Command == 'i') // validate int
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pStr = str_skip_to_whitespace(pStr);
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else if(Command == 'f') // validate float
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pStr = str_skip_to_whitespace(pStr);
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else if(Command == 's') // validate string
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pStr = str_skip_to_whitespace(pStr);
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if(pStr[0] != 0) // check for end of string
{
pStr[0] = 0;
pStr++;
}
}
}
}
return Error;
}
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int CConsole::RegisterPrintCallback(int OutputLevel, FPrintCallback pfnPrintCallback, void *pUserData)
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{
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if(m_NumPrintCB == MAX_PRINT_CB)
return -1;
m_aPrintCB[m_NumPrintCB].m_OutputLevel = clamp(OutputLevel, (int)(OUTPUT_LEVEL_STANDARD), (int)(OUTPUT_LEVEL_DEBUG));
m_aPrintCB[m_NumPrintCB].m_pfnPrintCallback = pfnPrintCallback;
m_aPrintCB[m_NumPrintCB].m_pPrintCallbackUserdata = pUserData;
return m_NumPrintCB++;
}
void CConsole::SetPrintOutputLevel(int Index, int OutputLevel)
{
if(Index >= 0 && Index < MAX_PRINT_CB)
m_aPrintCB[Index].m_OutputLevel = clamp(OutputLevel, (int)(OUTPUT_LEVEL_STANDARD), (int)(OUTPUT_LEVEL_DEBUG));
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}
void CConsole::Print(int Level, const char *pFrom, const char *pStr)
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{
dbg_msg(pFrom ,"%s", pStr);
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for(int i = 0; i < m_NumPrintCB; ++i)
{
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if(Level <= m_aPrintCB[i].m_OutputLevel && m_aPrintCB[i].m_pfnPrintCallback)
{
char aBuf[1024];
str_format(aBuf, sizeof(aBuf), "[%s]: %s", pFrom, pStr);
m_aPrintCB[i].m_pfnPrintCallback(aBuf, m_aPrintCB[i].m_pPrintCallbackUserdata);
}
}
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}
bool CConsole::LineIsValid(const char *pStr)
{
if(!pStr || *pStr == 0)
return false;
do
{
CResult Result;
const char *pEnd = pStr;
const char *pNextPart = 0;
int InString = 0;
while(*pEnd)
{
if(*pEnd == '"')
InString ^= 1;
else if(*pEnd == '\\') // escape sequences
{
if(pEnd[1] == '"')
pEnd++;
}
else if(!InString)
{
if(*pEnd == ';') // command separator
{
pNextPart = pEnd+1;
break;
}
else if(*pEnd == '#') // comment, no need to do anything more
break;
}
pEnd++;
}
if(ParseStart(&Result, pStr, (pEnd-pStr) + 1) != 0)
return false;
CCommand *pCommand = FindCommand(Result.m_pCommand, m_FlagMask);
if(!pCommand || ParseArgs(&Result, pCommand->m_pParams))
return false;
pStr = pNextPart;
}
while(pStr && *pStr);
return true;
}
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void CConsole::ExecuteLineStroked(int Stroke, const char *pStr)
{
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while(pStr && *pStr)
{
CResult Result;
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const char *pEnd = pStr;
const char *pNextPart = 0;
int InString = 0;
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while(*pEnd)
{
if(*pEnd == '"')
InString ^= 1;
else if(*pEnd == '\\') // escape sequences
{
if(pEnd[1] == '"')
pEnd++;
}
else if(!InString)
{
if(*pEnd == ';') // command separator
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{
pNextPart = pEnd+1;
break;
}
else if(*pEnd == '#') // comment, no need to do anything more
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break;
}
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pEnd++;
}
if(ParseStart(&Result, pStr, (pEnd-pStr) + 1) != 0)
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return;
if(!*Result.m_pCommand)
return;
CCommand *pCommand = FindCommand(Result.m_pCommand, m_FlagMask);
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if(pCommand)
{
if(pCommand->GetAccessLevel() >= m_AccessLevel)
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{
int IsStrokeCommand = 0;
if(Result.m_pCommand[0] == '+')
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{
// insert the stroke direction token
Result.AddArgument(m_paStrokeStr[Stroke]);
IsStrokeCommand = 1;
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}
if(Stroke || IsStrokeCommand)
{
if(ParseArgs(&Result, pCommand->m_pParams))
{
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "Invalid arguments... Usage: %s %s", pCommand->m_pName, pCommand->m_pParams);
Print(OUTPUT_LEVEL_STANDARD, "Console", aBuf);
}
else if(m_StoreCommands && pCommand->m_Flags&CFGFLAG_STORE)
{
m_ExecutionQueue.AddEntry();
m_ExecutionQueue.m_pLast->m_pfnCommandCallback = pCommand->m_pfnCallback;
m_ExecutionQueue.m_pLast->m_pCommandUserData = pCommand->m_pUserData;
m_ExecutionQueue.m_pLast->m_Result = Result;
}
else
pCommand->m_pfnCallback(&Result, pCommand->m_pUserData);
}
}
else if(Stroke)
{
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "Access for command %s denied.", Result.m_pCommand);
Print(OUTPUT_LEVEL_STANDARD, "Console", aBuf);
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}
}
else if(Stroke)
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{
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "No such command: %s.", Result.m_pCommand);
Print(OUTPUT_LEVEL_STANDARD, "Console", aBuf);
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}
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pStr = pNextPart;
}
}
void CConsole::PossibleCommands(const char *pStr, int FlagMask, bool Temp, FPossibleCallback pfnCallback, void *pUser)
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{
for(CCommand *pCommand = m_pFirstCommand; pCommand; pCommand = pCommand->m_pNext)
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{
if(pCommand->m_Flags&FlagMask && pCommand->m_Temp == Temp)
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{
if(str_find_nocase(pCommand->m_pName, pStr))
pfnCallback(pCommand->m_pName, pUser);
}
}
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}
CConsole::CCommand *CConsole::FindCommand(const char *pName, int FlagMask)
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{
for(CCommand *pCommand = m_pFirstCommand; pCommand; pCommand = pCommand->m_pNext)
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{
if(pCommand->m_Flags&FlagMask)
{
if(str_comp_nocase(pCommand->m_pName, pName) == 0)
return pCommand;
}
}
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return 0x0;
}
void CConsole::ExecuteLine(const char *pStr)
{
CConsole::ExecuteLineStroked(1, pStr); // press it
CConsole::ExecuteLineStroked(0, pStr); // then release it
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}
void CConsole::ExecuteFile(const char *pFilename)
{
// make sure that this isn't being executed already
for(CExecFile *pCur = m_pFirstExec; pCur; pCur = pCur->m_pPrev)
if(str_comp(pFilename, pCur->m_pFilename) == 0)
return;
if(!m_pStorage)
m_pStorage = Kernel()->RequestInterface<IStorage>();
if(!m_pStorage)
return;
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// push this one to the stack
CExecFile ThisFile;
CExecFile *pPrev = m_pFirstExec;
ThisFile.m_pFilename = pFilename;
ThisFile.m_pPrev = m_pFirstExec;
m_pFirstExec = &ThisFile;
// exec the file
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IOHANDLE File = m_pStorage->OpenFile(pFilename, IOFLAG_READ, IStorage::TYPE_ALL);
char aBuf[256];
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if(File)
{
char *pLine;
CLineReader lr;
str_format(aBuf, sizeof(aBuf), "executing '%s'", pFilename);
Print(IConsole::OUTPUT_LEVEL_STANDARD, "console", aBuf);
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lr.Init(File);
while((pLine = lr.Get()))
ExecuteLine(pLine);
io_close(File);
}
else
{
str_format(aBuf, sizeof(aBuf), "failed to open '%s'", pFilename);
Print(IConsole::OUTPUT_LEVEL_STANDARD, "console", aBuf);
}
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m_pFirstExec = pPrev;
}
void CConsole::Con_Echo(IResult *pResult, void *pUserData)
{
((CConsole*)pUserData)->Print(IConsole::OUTPUT_LEVEL_STANDARD, "Console", pResult->GetString(0));
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}
void CConsole::Con_Exec(IResult *pResult, void *pUserData)
{
((CConsole*)pUserData)->ExecuteFile(pResult->GetString(0));
}
void CConsole::ConModCommandAccess(IResult *pResult, void *pUser)
{
CConsole* pConsole = static_cast<CConsole *>(pUser);
char aBuf[128];
CCommand *pCommand = pConsole->FindCommand(pResult->GetString(0), CFGFLAG_SERVER);
if(pCommand)
{
if(pResult->NumArguments() == 2)
{
pCommand->SetAccessLevel(pResult->GetInteger(1));
str_format(aBuf, sizeof(aBuf), "moderator access for '%s' is now %s", pResult->GetString(0), pCommand->GetAccessLevel() ? "enabled" : "disabled");
}
else
str_format(aBuf, sizeof(aBuf), "moderator access for '%s' is %s", pResult->GetString(0), pCommand->GetAccessLevel() ? "enabled" : "disabled");
}
else
str_format(aBuf, sizeof(aBuf), "No such command: '%s'.", pResult->GetString(0));
pConsole->Print(OUTPUT_LEVEL_STANDARD, "Console", aBuf);
}
void CConsole::ConModCommandStatus(IResult *pResult, void *pUser)
{
CConsole* pConsole = static_cast<CConsole *>(pUser);
char aBuf[240];
mem_zero(aBuf, sizeof(aBuf));
int Used = 0;
for(CCommand *pCommand = pConsole->m_pFirstCommand; pCommand; pCommand = pCommand->m_pNext)
{
if(pCommand->m_Flags&pConsole->m_FlagMask && pCommand->GetAccessLevel() == ACCESS_LEVEL_MOD)
{
int Length = str_length(pCommand->m_pName);
if(Used + Length + 2 < (int)(sizeof(aBuf)))
{
if(Used > 0)
{
Used += 2;
str_append(aBuf, ", ", sizeof(aBuf));
}
str_append(aBuf, pCommand->m_pName, sizeof(aBuf));
Used += Length;
}
else
{
pConsole->Print(OUTPUT_LEVEL_STANDARD, "Console", aBuf);
mem_zero(aBuf, sizeof(aBuf));
str_copy(aBuf, pCommand->m_pName, sizeof(aBuf));
Used = Length;
}
}
}
if(Used > 0)
pConsole->Print(OUTPUT_LEVEL_STANDARD, "Console", aBuf);
}
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struct CIntVariableData
{
IConsole *m_pConsole;
int *m_pVariable;
int m_Min;
int m_Max;
};
struct CStrVariableData
{
IConsole *m_pConsole;
char *m_pStr;
int m_MaxSize;
};
static void IntVariableCommand(IConsole::IResult *pResult, void *pUserData)
{
CIntVariableData *pData = (CIntVariableData *)pUserData;
if(pResult->NumArguments())
{
int Val = pResult->GetInteger(0);
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// do clamping
if(pData->m_Min != pData->m_Max)
{
if (Val < pData->m_Min)
Val = pData->m_Min;
if (pData->m_Max != 0 && Val > pData->m_Max)
Val = pData->m_Max;
}
*(pData->m_pVariable) = Val;
}
else
{
char aBuf[1024];
str_format(aBuf, sizeof(aBuf), "Value: %d", *(pData->m_pVariable));
pData->m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "Console", aBuf);
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}
}
static void StrVariableCommand(IConsole::IResult *pResult, void *pUserData)
{
CStrVariableData *pData = (CStrVariableData *)pUserData;
if(pResult->NumArguments())
{
const char *pString = pResult->GetString(0);
if(!str_utf8_check(pString))
{
char Temp[4];
int Length = 0;
while(*pString)
{
int Size = str_utf8_encode(Temp, static_cast<const unsigned char>(*pString++));
if(Length+Size < pData->m_MaxSize)
{
mem_copy(pData->m_pStr+Length, &Temp, Size);
Length += Size;
}
else
break;
}
pData->m_pStr[Length] = 0;
}
else
str_copy(pData->m_pStr, pString, pData->m_MaxSize);
}
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else
{
char aBuf[1024];
str_format(aBuf, sizeof(aBuf), "Value: %s", pData->m_pStr);
pData->m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "Console", aBuf);
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}
}
CConsole::CConsole(int FlagMask)
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{
m_FlagMask = FlagMask;
m_AccessLevel = ACCESS_LEVEL_ADMIN;
m_pRecycleList = 0;
m_TempCommands.Reset();
m_StoreCommands = true;
m_paStrokeStr[0] = "0";
m_paStrokeStr[1] = "1";
m_ExecutionQueue.Reset();
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m_pFirstCommand = 0;
m_pFirstExec = 0;
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mem_zero(m_aPrintCB, sizeof(m_aPrintCB));
m_NumPrintCB = 0;
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m_pStorage = 0;
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// register some basic commands
Register("echo", "r", CFGFLAG_SERVER|CFGFLAG_CLIENT, Con_Echo, this, "Echo the text");
Register("exec", "r", CFGFLAG_SERVER|CFGFLAG_CLIENT, Con_Exec, this, "Execute the specified file");
Register("mod_command", "s?i", CFGFLAG_SERVER, ConModCommandAccess, this, "Specify command accessibility for moderators");
Register("mod_status", "", CFGFLAG_SERVER, ConModCommandStatus, this, "List all commands which are accessible for moderators");
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// TODO: this should disappear
#define MACRO_CONFIG_INT(Name,ScriptName,Def,Min,Max,Flags,Desc) \
{ \
static CIntVariableData Data = { this, &g_Config.m_##Name, Min, Max }; \
Register(#ScriptName, "?i", Flags, IntVariableCommand, &Data, Desc); \
}
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#define MACRO_CONFIG_STR(Name,ScriptName,Len,Def,Flags,Desc) \
{ \
static CStrVariableData Data = { this, g_Config.m_##Name, Len }; \
Register(#ScriptName, "?r", Flags, StrVariableCommand, &Data, Desc); \
}
#include "config_variables.h"
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#undef MACRO_CONFIG_INT
#undef MACRO_CONFIG_STR
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}
void CConsole::ParseArguments(int NumArgs, const char **ppArguments)
{
for(int i = 0; i < NumArgs; i++)
{
// check for scripts to execute
if(ppArguments[i][0] == '-' && ppArguments[i][1] == 'f' && ppArguments[i][2] == 0)
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{
if(NumArgs - i > 1)
ExecuteFile(ppArguments[i+1]);
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i++;
}
else if(!str_comp("-s", ppArguments[i]) || !str_comp("--silent", ppArguments[i]))
{
// skip silent param
continue;
}
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else
{
// search arguments for overrides
ExecuteLine(ppArguments[i]);
}
}
}
void CConsole::AddCommandSorted(CCommand *pCommand)
{
if(!m_pFirstCommand || str_comp(pCommand->m_pName, m_pFirstCommand->m_pName) < 0)
{
if(m_pFirstCommand && m_pFirstCommand->m_pNext)
pCommand->m_pNext = m_pFirstCommand;
else
pCommand->m_pNext = 0;
m_pFirstCommand = pCommand;
}
else
{
for(CCommand *p = m_pFirstCommand; p; p = p->m_pNext)
{
if(!p->m_pNext || str_comp(pCommand->m_pName, p->m_pNext->m_pName) < 0)
{
pCommand->m_pNext = p->m_pNext;
p->m_pNext = pCommand;
break;
}
}
}
}
void CConsole::Register(const char *pName, const char *pParams,
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int Flags, FCommandCallback pfnFunc, void *pUser, const char *pHelp)
{
CCommand *pCommand = new(mem_alloc(sizeof(CCommand), sizeof(void*))) CCommand;
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pCommand->m_pfnCallback = pfnFunc;
pCommand->m_pUserData = pUser;
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pCommand->m_pName = pName;
pCommand->m_pHelp = pHelp;
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pCommand->m_pParams = pParams;
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pCommand->m_Flags = Flags;
pCommand->m_Temp = false;
AddCommandSorted(pCommand);
}
void CConsole::RegisterTemp(const char *pName, const char *pParams, int Flags, const char *pHelp)
{
CCommand *pCommand;
if(m_pRecycleList)
{
pCommand = m_pRecycleList;
str_copy(const_cast<char *>(pCommand->m_pName), pName, TEMPCMD_NAME_LENGTH);
str_copy(const_cast<char *>(pCommand->m_pHelp), pHelp, TEMPCMD_HELP_LENGTH);
str_copy(const_cast<char *>(pCommand->m_pParams), pParams, TEMPCMD_PARAMS_LENGTH);
m_pRecycleList = m_pRecycleList->m_pNext;
}
else
{
pCommand = new(m_TempCommands.Allocate(sizeof(CCommand))) CCommand;
char *pMem = static_cast<char *>(m_TempCommands.Allocate(TEMPCMD_NAME_LENGTH));
str_copy(pMem, pName, TEMPCMD_NAME_LENGTH);
pCommand->m_pName = pMem;
pMem = static_cast<char *>(m_TempCommands.Allocate(TEMPCMD_HELP_LENGTH));
str_copy(pMem, pHelp, TEMPCMD_HELP_LENGTH);
pCommand->m_pHelp = pMem;
pMem = static_cast<char *>(m_TempCommands.Allocate(TEMPCMD_PARAMS_LENGTH));
str_copy(pMem, pParams, TEMPCMD_PARAMS_LENGTH);
pCommand->m_pParams = pMem;
}
pCommand->m_pfnCallback = 0;
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pCommand->m_pUserData = 0;
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pCommand->m_Flags = Flags;
pCommand->m_Temp = true;
AddCommandSorted(pCommand);
}
void CConsole::DeregisterTemp(const char *pName)
{
if(!m_pFirstCommand)
return;
CCommand *pRemoved = 0;
// remove temp entry from command list
if(m_pFirstCommand->m_Temp && str_comp(m_pFirstCommand->m_pName, pName) == 0)
{
pRemoved = m_pFirstCommand;
m_pFirstCommand = m_pFirstCommand->m_pNext;
}
else
{
for(CCommand *pCommand = m_pFirstCommand; pCommand->m_pNext; pCommand = pCommand->m_pNext)
if(pCommand->m_pNext->m_Temp && str_comp(pCommand->m_pNext->m_pName, pName) == 0)
{
pRemoved = pCommand->m_pNext;
pCommand->m_pNext = pCommand->m_pNext->m_pNext;
break;
}
}
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// add to recycle list
if(pRemoved)
{
pRemoved->m_pNext = m_pRecycleList;
m_pRecycleList = pRemoved;
}
}
void CConsole::DeregisterTempAll()
{
// set non temp as first one
for(; m_pFirstCommand && m_pFirstCommand->m_Temp; m_pFirstCommand = m_pFirstCommand->m_pNext);
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// remove temp entries from command list
for(CCommand *pCommand = m_pFirstCommand; pCommand && pCommand->m_pNext; pCommand = pCommand->m_pNext)
{
CCommand *pNext = pCommand->m_pNext;
if(pNext->m_Temp)
{
for(; pNext && pNext->m_Temp; pNext = pNext->m_pNext);
pCommand->m_pNext = pNext;
}
}
m_TempCommands.Reset();
m_pRecycleList = 0;
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}
void CConsole::Con_Chain(IResult *pResult, void *pUserData)
{
CChain *pInfo = (CChain *)pUserData;
pInfo->m_pfnChainCallback(pResult, pInfo->m_pUserData, pInfo->m_pfnCallback, pInfo->m_pCallbackUserData);
}
void CConsole::Chain(const char *pName, FChainCommandCallback pfnChainFunc, void *pUser)
{
CCommand *pCommand = FindCommand(pName, m_FlagMask);
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if(!pCommand)
{
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "failed to chain '%s'", pName);
Print(IConsole::OUTPUT_LEVEL_DEBUG, "console", aBuf);
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return;
}
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CChain *pChainInfo = (CChain *)mem_alloc(sizeof(CChain), sizeof(void*));
// store info
pChainInfo->m_pfnChainCallback = pfnChainFunc;
pChainInfo->m_pUserData = pUser;
pChainInfo->m_pfnCallback = pCommand->m_pfnCallback;
pChainInfo->m_pCallbackUserData = pCommand->m_pUserData;
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// chain
pCommand->m_pfnCallback = Con_Chain;
pCommand->m_pUserData = pChainInfo;
}
void CConsole::StoreCommands(bool Store)
{
if(!Store)
{
for(CExecutionQueue::CQueueEntry *pEntry = m_ExecutionQueue.m_pFirst; pEntry; pEntry = pEntry->m_pNext)
pEntry->m_pfnCommandCallback(&pEntry->m_Result, pEntry->m_pCommandUserData);
m_ExecutionQueue.Reset();
}
m_StoreCommands = Store;
}
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const IConsole::CCommandInfo *CConsole::GetCommandInfo(const char *pName, int FlagMask, bool Temp)
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{
for(CCommand *pCommand = m_pFirstCommand; pCommand; pCommand = pCommand->m_pNext)
{
if(pCommand->m_Flags&FlagMask && pCommand->m_Temp == Temp)
{
if(str_comp_nocase(pCommand->m_pName, pName) == 0)
return pCommand;
}
}
return 0;
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}
extern IConsole *CreateConsole(int FlagMask) { return new CConsole(FlagMask); }