/**
* Initialises the CscopeFrontend class with the current project arguments,
* and creates an object used for rebuilding the symbol database.
*/
void KScope::initCscope()
{
ProjectBase* pProj;
// Delete the current object, if one exists
if (m_pCscopeBuild)
delete m_pCscopeBuild;
// Initialise CscopeFrontend
pProj = m_pProjMgr->curProject();
CscopeFrontend::init(pProj->getPath(), pProj->getArgs());
// Create a persistent Cscope process
m_pCscopeBuild = new CscopeFrontend();
// Show build progress information in the main status bar
connect(m_pCscopeBuild, SIGNAL(progress(int, int)), this,
SLOT(slotBuildProgress(int, int)));
connect(m_pCscopeBuild, SIGNAL(buildInvIndex()), this,
SLOT(slotBuildInvIndex()));
connect(m_pCscopeBuild, SIGNAL(finished(uint)), this,
SLOT(slotBuildFinished(uint)));
connect(m_pCscopeBuild, SIGNAL(aborted()), this,
SLOT(slotBuildAborted()));
// Show errors in a modeless dialogue
connect(m_pCscopeBuild, SIGNAL(error(const QString&)), this,
SLOT(slotCscopeError(const QString&)));
}
/**
* Parses the output of a Cscope process.
* Implements a state machine, where states correspond to the output of the
* controlled Cscope process.
* @param sToken The current token read (the token delimiter is determined
* by the current state)
* @return A value indicating the way this token should be treated: dropped,
* added to the token queue, or finishes a new record
*/
Frontend::ParseResult GrepFrontend::parseStdout(QString& sToken,
ParserDelim /* ignored */)
{
qDebug() << "Frontend::ParseResult \n";
int nFiles, nTotal, nRecords;
ParseResult result = DiscardToken;
ParserState stPrev;
#if 0
// Remember previous state
stPrev = m_state;
// Handle the token according to the current state
switch (m_state) {
case BuildStart:
if (sToken == "Building cross-reference...") {
m_state = BuildSymbol;
m_delim = WSpace;
}
else if (sToken == "Building inverted index...") {
emit buildInvIndex();
}
result = DiscardToken;
break;
case BuildSymbol:
// A single angle bracket is the prefix of a progress indication,
// while double brackets is Cscope's prompt for a new query
if (sToken == ">") {
m_state = Building;
m_delim = Newline;
}
result = DiscardToken;
break;
case Building:
// Try to get building progress
if (sscanf(sToken.latin1(), BUILD_STR, &nFiles, &nTotal) == 2) {
emit progress(nFiles, nTotal);
// Check for last progress message
if (nFiles == nTotal) {
m_state = BuildStart;
m_delim = Newline;
result = DiscardToken;
break;
}
}
// Wait for another progress line or the "ready" symbol
m_state = BuildSymbol;
m_delim = WSpace;
result = DiscardToken;
break;
case SearchSymbol:
// Check for more search progress, or the end of the search,
// designated by a line in the format of "cscope: X lines"
if (sToken == ">") {
m_state = Searching;
m_delim = Newline;
result = DiscardToken;
break;
}
else if (sToken == "cscope:") {
m_state = SearchEnd;
m_delim = Newline;
result = DiscardToken;
break;
}
case File:
// Is this the first entry? If so, signal that the query is complete
if (stPrev != LineText)
emit progress(1, 1);
// Treat the token as the name of the file in this record
m_state = Func;
result = AcceptToken;
break;
case Searching:
// Try to get the search progress value (ignore other messages)
if ((sscanf(sToken.latin1(), SEARCH_STR, &nFiles, &nTotal) == 2) ||
(sscanf(sToken.latin1(), INV_STR, &nFiles, &nTotal) == 2) ||
(sscanf(sToken.latin1(), REGEXP_STR, &nFiles, &nTotal) == 2)) {
emit progress(nFiles, nTotal);
}
m_state = SearchSymbol;
m_delim = WSpace;
result = DiscardToken;
break;
case SearchEnd:
// Get the number of results found in this search
if ((sscanf(sToken.latin1(), SEARCHEND_STR, &nRecords) == 1) &&
(m_nMaxRecords > 0) &&
(nRecords > m_nMaxRecords)) {
result = Abort;
}
else {
m_state = File;
m_delim = WSpace;
result = DiscardToken;
}
break;
case Func:
// Treat the token as the name of the function in this record
if (sToken.toInt()) {
// In case of a global definition, there is no function name, and
// instead the line number is given immediately
m_state = LineText;
m_delim = Newline;
}
else {
// Not a number, it is the name of the function
m_state = Line;
}
result = AcceptToken;
break;
case Line:
// Treat the token as the line number in this record
m_state = LineText;
m_delim = Newline;
result = AcceptToken;
break;
case LineText:
// Treat the token as the text of this record, and report a new
// record
m_state = File;
m_delim = WSpace;
result = RecordReady;
break;
default:
// Do nothing (prevents a compilation warning for unused enum values)
break;
}
#endif
return result;
}
