bool JPEGDecompressor::readScanHeader(void)
{
/* Process all markers in the scan header: */
int nextMarker=processTables();
/* Process the next marker: */
if(nextMarker==SOS)
processSos();
return nextMarker==SOS;
}
int processManifestXML() {
QFile xmlManifest(vManifestXML);
QFile xmlData(vDatafileXML);
QFile sqlInsertsFile(vSqlInsertsFile);
//Open the manifest file and put the contents in a DOM document
if (!xmlManifest.open(QIODevice::ReadOnly))
return 1;
if (!manifestDoc.setContent(&xmlManifest)) {
xmlManifest.close();
return 1;
}
xmlManifest.close();
//Open the xml data file and put the contents in a DOM document
if (!xmlData.open(QIODevice::ReadOnly))
return 1;
if (!dataDoc.setContent(&xmlData)) {
xmlData.close();
return 1;
}
xmlData.close();
//Open text file for writing
if (!sqlInsertsFile.open(QIODevice::WriteOnly | QIODevice::Text)) {
return 1;
}
QTextStream out(&sqlInsertsFile);
//Get the list of table nodes from the manifest
tableNodesList = manifestDoc.elementsByTagName("table");
//Get nodes list for the data
dataNodesList = dataDoc.elementsByTagName(vDatafileBaseNode);
//Start the data processing
processTables(tableNodesList.item(0), dataNodesList.item(0));
//Write the string to the file and close the file
out << str;
sqlInsertsFile.close();
return 0;
}
JPEGDecompressor::JPEGDecompressor(IO::File& sSource)
:source(sSource),
numComponents(0),
numBits(0),
components(0),
numScanComponents(0),
restartInterval(0),
ss(0),pt(0)
{
/* Clear the current components: */
for(int i=0;i<4;++i)
scanComponents[i]=0;
/* Clear the Huffman tables: */
for(int i=0;i<4;++i)
huffmanTables[i]=0;
/* Check for an SOI marker at the beginning of the stream: */
int c1=source.getChar();
int c2=source.getChar();
if(c1!=0xff||c2!=SOI)
Misc::throwStdErr("JPEGDecompressor::JPEGDecompressor: input stream is not a JPEG stream");
/* Process the SOI marker just read: */
processSoi();
/* Process all markers in the file header: */
int nextMarker=processTables();
/* Process the next marker: */
switch(nextMarker)
{
case SOF0:
case SOF1:
case SOF3:
processSof(nextMarker);
break;
default:
/* Just ignore the wrong SOF marker type for now... */
;
}
}
int processTables(QDomNode tableNodeToProcess, QDomNode dataNodeToProcess) {
QString tableName;
QDomNodeList recordsNodesList;
QDomNode recordNode;
QDomNode tableNode;
QString fieldsStatement;
QDomNode childTableNode;
QString fieldName;
bool processedData = false;
//Get the table name and set how deep the node is in the tree
tableName = tableNodeToProcess.toElement().attribute("mysqlcode", "None");
nodeDepth = nodeDepth + 1;
//Get the records from the data using the table name
//First check if the main table has been processed and pick its name correctly
//This is caused by the fact that the main table in the manifest and the data might not have the same name
if (tableName == vManifestMainTable) {
recordsNodesList = dataDoc.elementsByTagName(vDatafileBaseNode);
}
else {
if (tableName.startsWith(vManifestMainTable)) {
recordsNodesList = dataNodeToProcess.toElement().elementsByTagName(tableName.mid(vManifestMainTable.length() + 1));
}
else {
recordsNodesList = dataNodeToProcess.toElement().elementsByTagName(tableName);
}
}
if (recordsNodesList.count() > 0) {
for (int recCount = 0; recCount <= recordsNodesList.count() - 1; recCount++) {
processedData = false;
recordNode = recordsNodesList.item(recCount);
//Get the current table node from manifest
for(int tcount = 0; tableNodesList.count(); tcount++) {
if(tableNodesList.item(tcount).toElement().attribute("mysqlcode", "None") == tableName) {
tableNode = tableNodesList.item(tcount);
break;
}
}
//Pass through the table child nodes to get the field names
fieldsStatement = "";
childTableNode = tableNode.firstChild();
while (!childTableNode.isNull()) {
if (childTableNode.toElement().tagName() == "field") {
//Get the field name and use in creating the fields statement
fieldName = childTableNode.toElement().attribute("mysqlcode", "None");
fieldsStatement = fieldsStatement + fieldName + ", ";
}
else {
//Encountered a table get the record values under this parent record and do process again
if (processedData == false) {
processTableData(tableNode, recordNode, tableName, fieldsStatement, QString::number(recCount + 1));
processedData = true;
}
processTables(childTableNode, recordNode);
}
//Get the next child table node
childTableNode = childTableNode.nextSibling();
}
//If no table was encountered within the table being processed
if (processedData == false) {
processTableData(tableNode, recordNode, tableName, fieldsStatement, QString::number(recCount + 1));
}
}
}
//Current table finished reduce nodeDepth
nodeDepth = nodeDepth - 1;
return 0;
}