Write
};
struct Offset {
- Offset()
- : chunk(0),
- offsetInChunk(0)
+ Offset(uint64_t _chunk = 0, uint32_t _offsetInChunk = 0)
+ : chunk(_chunk),
+ offsetInChunk(_offsetInChunk)
{}
uint64_t chunk;
uint32_t offsetInChunk;
bool isOpened() const;
File::Mode mode() const;
- std::string filename() const;
-
bool open(const std::string &filename, File::Mode mode);
bool write(const void *buffer, size_t length);
bool read(void *buffer, size_t length);
void close();
void flush(void);
int getc();
- bool skip(unsigned length);
+ bool skip(size_t length);
+ int percentRead();
virtual bool supportsOffsets() const = 0;
- virtual File::Offset currentOffset();
+ virtual File::Offset currentOffset() = 0;
virtual void setCurrentOffset(const File::Offset &offset);
protected:
virtual bool rawOpen(const std::string &filename, File::Mode mode) = 0;
virtual int rawGetc() = 0;
virtual void rawClose() = 0;
virtual void rawFlush() = 0;
- virtual bool rawSkip(unsigned length) = 0;
+ virtual bool rawSkip(size_t length) = 0;
+ virtual int rawPercentRead() = 0;
protected:
- std::string m_filename;
File::Mode m_mode;
bool m_isOpened;
};
return m_mode;
}
-inline std::string File::filename() const
-{
- return m_filename;
-}
-
inline bool File::open(const std::string &filename, File::Mode mode)
{
if (m_isOpened) {
return rawRead(buffer, length);
}
+inline int File::percentRead()
+{
+ if (!m_isOpened || m_mode != File::Read) {
+ return 0;
+ }
+ return rawPercentRead();
+}
+
inline void File::close()
{
if (m_isOpened) {
inline void File::flush(void)
{
- rawFlush();
+ if (m_mode == File::Write) {
+ rawFlush();
+ }
}
inline int File::getc()
return rawGetc();
}
-inline bool File::skip(unsigned length)
+inline bool File::skip(size_t length)
{
if (!m_isOpened || m_mode != File::Read) {
return false;
virtual bool supportsOffsets() const;
+ virtual File::Offset currentOffset();
protected:
virtual bool rawOpen(const std::string &filename, File::Mode mode);
virtual bool rawWrite(const void *buffer, size_t length);
virtual int rawGetc();
virtual void rawClose();
virtual void rawFlush();
- virtual bool rawSkip(unsigned length);
+ virtual bool rawSkip(size_t length);
+ virtual int rawPercentRead();
private:
void *m_gzFile;
+ double m_endOffset;
};
inline bool