1 files changed, 85 insertions, 0 deletions
diff --git a/lib/bkisofs/bkCache.c b/lib/bkisofs/bkCache.c
new file mode 100644
index 0000000..174e86b
--- /dev/null
+++ b/lib/bkisofs/bkCache.c
@@ -0,0 +1,85 @@
+/******************************* LICENCE **************************************
+* Any code in this file may be redistributed or modified under the terms of
+* the GNU General Public Licence as published by the Free Software 
+* Foundation; version 2 of the licence.
+****************************** END LICENCE ***********************************/
+
+/******************************************************************************
+* Author:
+* Andrew Smith, http://littlesvr.ca/misc/contactandrew.php
+*
+* Contributors:
+* 
+******************************************************************************/
+
+/******************************************************************************
+* 31 dec 2006: these functions turned out to be so heavy on cpu usage that 
+* performance went down significantly for writing to anything, including 
+* the local filesystem. So now they don't do anything.
+* 07 Jan 2007: deleted the said caching functions
+******************************************************************************/
+
+#include <string.h>
+#include <stdio.h>
+#include <sys/timeb.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "bkInternal.h"
+#include "bkCache.h"
+#include "bkIoWrappers.h"
+
+int wcSeekForward(VolInfo* volInfo, bk_off_t numBytes)
+{
+    bkSeekSet(volInfo->imageForWriting, numBytes, SEEK_CUR);
+    
+    return 1;
+}
+
+int wcSeekSet(VolInfo* volInfo, bk_off_t position)
+{
+    bkSeekSet(volInfo->imageForWriting, position, SEEK_SET);
+    
+    return 1;
+}
+
+bk_off_t wcSeekTell(VolInfo* volInfo)
+{
+    return bkSeekTell(volInfo->imageForWriting);
+}
+
+int wcWrite(VolInfo* volInfo, const char* block, size_t numBytes)
+{
+    ssize_t rc;
+    rc = bkWrite(volInfo->imageForWriting, block, numBytes);
+    if(rc == -1)
+        return BKERROR_WRITE_GENERIC;
+    
+    if(volInfo->writeProgressFunction != NULL)
+    {
+        struct timeb timeNow;
+        ftime(&timeNow);
+        
+        if(timeNow.time - volInfo->lastTimeCalledProgress.time >= 1 ||
+           timeNow.millitm - volInfo->lastTimeCalledProgress.millitm >= 100)
+        {
+            BkStatStruct statStruct;
+            double percentComplete;
+            
+            bkFstat(volInfo->imageForWriting, &statStruct);
+            percentComplete = (double)statStruct.st_size * 100 / 
+                              volInfo->estimatedIsoSize + 1;
+            
+            /* estimate isn't perfect */
+            if(percentComplete > 100)
+                percentComplete = 100;
+            else if (percentComplete < 0)
+                percentComplete = 0;
+            
+            volInfo->writeProgressFunction(volInfo, percentComplete);
+            volInfo->lastTimeCalledProgress = timeNow;
+        }
+    }
+    
+    return 1;
+}