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Greatly simplify commandline parsing

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Silent 2018-07-02 17:24:39 +02:00
parent f159a62163
commit 74d39b1cec
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GPG Key ID: AE53149BB0C45AF1
1 changed files with 13 additions and 110 deletions
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123
PowerEditor/src/winmain.cpp
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@ -76,122 +76,27 @@ void allowWmCopydataMessages(Notepad_plus_Window& notepad_plus_plus, const NppPa
} }
} }
bool checkSingleFile(const TCHAR *commandLine)
{
if (!commandLine || commandLine[0] == TEXT('\0'))
return false;
TCHAR fullpath[MAX_PATH] = {0};
const DWORD fullpathResult = ::GetFullPathName(commandLine, MAX_PATH, fullpath, NULL);
if (fullpathResult == 0)
return false;
if (fullpathResult > MAX_PATH)
return false;
if (::PathFileExists(fullpath))
return true;
return false;
}
//commandLine should contain path to n++ executable running //commandLine should contain path to n++ executable running
void parseCommandLine(const TCHAR* commandLine, ParamVector& paramVector) ParamVector parseCommandLine(const TCHAR* commandLine)
{ {
if (!commandLine) ParamVector result;
return; int numArgs = 0;
LPWSTR* tokenizedCmdLine = CommandLineToArgvW( commandLine, &numArgs );
TCHAR* cmdLine = new TCHAR[lstrlen(commandLine) + 1]; if ( tokenizedCmdLine != nullptr )
lstrcpy(cmdLine, commandLine);
TCHAR* cmdLinePtr = cmdLine;
//remove the first element, since thats the path the the executable (GetCommandLine does that)
TCHAR stopChar = TEXT(' ');
if (cmdLinePtr[0] == TEXT('\"'))
{ {
stopChar = TEXT('\"'); result.assign( tokenizedCmdLine+1, tokenizedCmdLine+numArgs ); // If numArgs == 1, it will do nothing
++cmdLinePtr; LocalFree( tokenizedCmdLine );
} }
//while this is not really DBCS compliant, space and quote are in the lower 127 ASCII range return result;
while(cmdLinePtr[0] && cmdLinePtr[0] != stopChar)
{
++cmdLinePtr;
}
// For unknown reason, the following command :
// c:\NppDir>notepad++
// (without quote) will give string "notepad++\0notepad++\0"
// To avoid the unexpected behaviour we check the end of string before increasing the pointer
if (cmdLinePtr[0] != '\0')
++cmdLinePtr; //advance past stopChar
//kill remaining spaces
while(cmdLinePtr[0] == TEXT(' '))
++cmdLinePtr;
bool isFile = checkSingleFile(cmdLinePtr); //if the commandline specifies only a file, open it as such
if (isFile)
{
paramVector.push_back(cmdLinePtr);
delete[] cmdLine;
return;
}
bool isInFile = false;
bool isInWhiteSpace = true;
size_t commandLength = lstrlen(cmdLinePtr);
std::vector<TCHAR *> args;
for (size_t i = 0; i < commandLength; ++i)
{
switch(cmdLinePtr[i])
{
case '\"': //quoted filename, ignore any following whitespace
{
if (!isInFile) //" will always be treated as start or end of param, in case the user forgot to add an space
{
args.push_back(cmdLinePtr+i+1); //add next param(since zero terminated original, no overflow of +1)
}
isInFile = !isInFile;
isInWhiteSpace = false;
//because we dont want to leave in any quotes in the filename, remove them now (with zero terminator)
cmdLinePtr[i] = 0;
}
break;
case '\t': //also treat tab as whitespace
case ' ':
{
isInWhiteSpace = true;
if (!isInFile)
cmdLinePtr[i] = 0; //zap spaces into zero terminators, unless its part of a filename
}
break;
default: //default TCHAR, if beginning of word, add it
{
if (!isInFile && isInWhiteSpace)
{
args.push_back(cmdLinePtr+i); //add next param
isInWhiteSpace = false;
}
}
}
}
paramVector.assign(args.begin(), args.end());
delete [] cmdLine;
} }
bool isInList(const TCHAR *token2Find, ParamVector & params) bool isInList(const TCHAR *token2Find, ParamVector& params, bool eraseArg = true)
{ {
size_t nbItems = params.size(); for (auto it = params.begin(); it != params.end(); ++it)
for (size_t i = 0; i < nbItems; ++i)
{ {
if (!lstrcmp(token2Find, params.at(i).c_str())) if (lstrcmp(token2Find, it->c_str()) == 0)
{ {
params.erase(params.begin() + i); if (eraseArg) params.erase(it);
return true; return true;
} }
} }
@ -352,9 +257,7 @@ void doException(Notepad_plus_Window & notepad_plus_plus)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int) int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int)
{ {
LPTSTR cmdLine = ::GetCommandLine(); ParamVector params = parseCommandLine(::GetCommandLine());
ParamVector params;
parseCommandLine(cmdLine, params);
MiniDumper mdump; //for debugging purposes. MiniDumper mdump; //for debugging purposes.