1 files changed, 93 insertions, 20 deletions

diff --git a/vcl/unx/generic/printer/cupsmgr.cxx b/vcl/unx/generic/printer/cupsmgr.cxx
index 6b06596df614..5169d29199a4 100644
--- a/vcl/unx/generic/printer/cupsmgr.cxx
+++ b/vcl/unx/generic/printer/cupsmgr.cxx
@@ -646,8 +646,6 @@ int CUPSManager::endSpool( const OUString& rPrintername, const OUString& rJobTit
                rDocumentJobData.m_nCopies
                );
 
-    int nJobID = 0;
-
     osl::MutexGuard aGuard( m_aCUPSMutex );
 
     boost::unordered_map< OUString, int, OUStringHash >::iterator dest_it =
@@ -659,25 +657,98 @@ int CUPSManager::endSpool( const OUString& rPrintername, const OUString& rJobTit
     }
 
     boost::unordered_map< FILE*, OString, FPtrHash >::const_iterator it = m_aSpoolFiles.find( pFile );
-    if( it != m_aSpoolFiles.end() )
+    if( it == m_aSpoolFiles.end() )
+        return false;
+    fclose( pFile );
+    PendingJob job( rPrintername, rJobTitle, rDocumentJobData, bBanner, it->second );
+    m_aSpoolFiles.erase( pFile );
+    pendingJobs.push_back( job );
+    if( !batchMode ) // process immediately, otherwise will be handled by flushBatchPrint()
+        return processPendingJobs();
+    return true;
+}
+
+bool CUPSManager::startBatchPrint()
+{
+    batchMode = true;
+    return true;
+}
+
+bool CUPSManager::supportsBatchPrint() const
+{
+    return true;
+}
+
+bool CUPSManager::flushBatchPrint()
+{
+    osl::MutexGuard aGuard( m_aCUPSMutex );
+    return processPendingJobs();
+}
+
+bool CUPSManager::processPendingJobs()
+{
+    // Print all jobs that have the same data using one CUPS call (i.e. merge all jobs that differ only in files to print).
+    PendingJob currentJobData;
+    bool first = true;
+    std::vector< OString > files;
+    bool ok = true;
+    while( !pendingJobs.empty())
+    {
+        if( first )
+        {
+            currentJobData = pendingJobs.front();
+            first = false;
+        }
+        else if( currentJobData.printerName != pendingJobs.front().printerName
+                || currentJobData.jobTitle != pendingJobs.front().jobTitle
+                || currentJobData.jobData != pendingJobs.front().jobData
+                || currentJobData.banner != pendingJobs.front().banner )
+        {
+            if( !printJobs( currentJobData, files ))
+                ok = false;
+            files.clear();
+            currentJobData = pendingJobs.front();
+        }
+        files.push_back( pendingJobs.front().file );
+        pendingJobs.pop_front();
+    }
+    if( !first )
     {
-        fclose( pFile );
-        rtl_TextEncoding aEnc = osl_getThreadTextEncoding();
+        if( !printJobs( currentJobData, files )) // print the last batch
+            ok = false;
+    }
+    return ok;
+}
 
-        // setup cups options
-        int nNumOptions = 0;
-        cups_option_t* pOptions = NULL;
-        getOptionsFromDocumentSetup( rDocumentJobData, bBanner, nNumOptions, (void**)&pOptions );
+bool CUPSManager::printJobs( const PendingJob& job, const std::vector< OString >& files )
+{
+    boost::unordered_map< OUString, int, OUStringHash >::iterator dest_it =
+        m_aCUPSDestMap.find( job.printerName );
+
+    rtl_TextEncoding aEnc = osl_getThreadTextEncoding();
+
+    // setup cups options
+    int nNumOptions = 0;
+    cups_option_t* pOptions = NULL;
+    getOptionsFromDocumentSetup( job.jobData, job.banner, nNumOptions, reinterpret_cast<void**>(&pOptions) );
+
+    cups_dest_t* pDest = ((cups_dest_t*)m_pDests) + dest_it->second;
 
-        cups_dest_t* pDest = ((cups_dest_t*)m_pDests) + dest_it->second;
-        nJobID = cupsPrintFile( pDest->name,
-        it->second.getStr(),
-        OUStringToOString( rJobTitle, aEnc ).getStr(),
-        nNumOptions, pOptions );
+    std::vector< const char* > fnames;
+    for( std::vector< OString >::const_iterator it = files.begin();
+         it != files.end();
+         ++it )
+        fnames.push_back( it->getStr());
+
+    int nJobID = cupsPrintFiles(pDest->name,
+            fnames.size(),
+            fnames.data(),
+            OUStringToOString( job.jobTitle, aEnc ).getStr(),
+            nNumOptions, pOptions);
 #if OSL_DEBUG_LEVEL > 1
         fprintf( stderr, "cupsPrintFile( %s, %s, %s, %d, %p ) returns %d\n",
                     pDest->name,
-                    it->second.getStr(),
+                    ( fnames.size() == 1 ? files.front() : OString::number( fnames.size()) ).getStr(),
                     OUStringToOString( rJobTitle, aEnc ).getStr(),
                     nNumOptions,
                     pOptions,
@@ -691,11 +762,13 @@ int CUPSManager::endSpool( const OUString& rPrintername, const OUString& rJobTit
         system( aCmd.getStr() );
 #endif
 
-        unlink( it->second.getStr() );
-        m_aSpoolFiles.erase( pFile );
-        if( pOptions )
-            cupsFreeOptions( nNumOptions, pOptions );
-    }
+    for( std::vector< OString >::const_iterator it = files.begin();
+         it != files.end();
+         ++it )
+        unlink( it->getStr());
+
+    if( pOptions )
+        cupsFreeOptions( nNumOptions, pOptions );
 
     return nJobID;
 }