pad.h

#ifndef FILESEQ_PAD_H_
#define FILESEQ_PAD_H_
 
#include <map>
#include <string>
#include <vector>
 
 
namespace fileseq {
 
 
// Constants defining the style of padding to use
// when converting between padding characters ('#', '##', '@@@')
// and their equivalent numeric padding width
enum PadStyle {
 PadStyleHash1 = 0,
 PadStyleHash4 = 1,
 PadStyleDefault = PadStyleHash4
};
 
 
std::string padFrameRange(const std::string &frange, size_t pad);
 
 
std::string getPaddingChars(size_t width);
 
 
// Internal
//
 
namespace internal {
 
// Fwd Decl
class PaddingMapper;
 
 
const PaddingMapper& getPadMapperForStyle(PadStyle style);
 
 
// PaddingMapper defines behavior for converting between
// padding characters and their pad width
class PaddingMapper {
 
public:
 virtual ~PaddingMapper() = default;
 
 // Return all supported padding characters
 std::string getAllChars() const;
 
 // Return a width for a string of pad characters
 size_t getPaddingCharsSize(const std::string &chars) const;
 
 // Return the padding string sequence representing a width
 virtual std::string getPaddingChars(long width) const = 0;
 
protected:
 typedef std::map<char, size_t> CharSizeMap;
 
 // Mapping pad characters to their width
 // CharSizeMap* m_charToSize;
 CharSizeMap m_charToSize;
 
 // The default padding character to use
 char m_defaultChar;
};
 
 
class SingleHashPad : public PaddingMapper {
 
public:
 SingleHashPad();
 
 virtual std::string getPaddingChars(long width) const;
};
 
 
class MultiHashPad : public PaddingMapper {
 
public:
 MultiHashPad();
 
 virtual std::string getPaddingChars(long width) const;
};
 
 
} // internal
 
 
} // fileseq
 
#endif // FILESEQ_PAD_H_