#include <lib/base/rawfile.h>
#include <lib/base/eerror.h>
-DEFINE_REF(eRawFile);
-
eRawFile::eRawFile()
- :m_lock(true)
{
m_fd = -1;
m_file = 0;
{
return m_totallength;
}
-
-off_t eRawFile::position()
-{
- if (m_nrfiles < 2)
- {
- if (!m_cached)
- return ::lseek(m_fd, 0, SEEK_CUR);
- else
- return ::fseeko(m_file, 0, SEEK_CUR);
- }
- return m_current_offset;
-}
-
-eSingleLock &eRawFile::getLock()
-{
- return m_lock;
-}
#define __lib_base_rawfile_h
#include <string>
-#include <lib/base/object.h>
-class iDataSource: public iObject
+class eRawFile
{
public:
- virtual off_t lseek(off_t offset, int whence)=0;
- virtual ssize_t read(void *buf, size_t count)=0; /* NOTE: you must be able to handle short reads! */
- virtual off_t length()=0;
- virtual off_t position()=0;
- virtual int valid()=0;
- virtual eSingleLock &getLock()=0;
- virtual bool is_shared()=0;
-};
-
-class iDataSourcePositionRestorer
-{
- ePtr<iDataSource> &m_source;
- off_t m_position;
-public:
- iDataSourcePositionRestorer(ePtr<iDataSource> &source)
- :m_source(source)
- {
- if (m_source->is_shared())
- m_position = m_source->position();
- }
- ~iDataSourcePositionRestorer()
- {
- if (m_source->is_shared())
- m_source->lseek(m_position, SEEK_SET);
- }
-};
-
-class eRawFile: public iDataSource
-{
- DECLARE_REF(eRawFile);
- eSingleLock m_lock;
-public:
eRawFile();
~eRawFile();
+
int open(const char *filename, int cached = 0);
void setfd(int fd);
off_t lseek(off_t offset, int whence);
int close();
ssize_t read(void *buf, size_t count); /* NOTE: you must be able to handle short reads! */
off_t length();
- off_t position();
int valid();
- eSingleLock &getLock();
- bool is_shared() { return ref.count > 1; }
private:
int m_fd; /* for uncached */
FILE *m_file; /* for cached */
+
int m_cached;
std::string m_basename;
off_t m_splitsize, m_totallength, m_current_offset, m_base_offset, m_last_offset;