Exiv2
image_int.hpp
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20 #ifndef IMAGE_INT_HPP_
21 #define IMAGE_INT_HPP_
22 
23 // *****************************************************************************
24 // included header files
25 #include "types.hpp"
26 
27 // + standard includes
28 #include <string>
29 
30 #if (defined(__GNUG__) || defined(__GNUC__)) || defined(__clang__)
31 #define ATTRIBUTE_FORMAT_PRINTF __attribute__((format(printf, 1, 0)))
32 #else
33 #define ATTRIBUTE_FORMAT_PRINTF
34 #endif
35 
36 // *****************************************************************************
37 // namespace extensions
38 namespace Exiv2 {
39  namespace Internal {
40 
41 // *****************************************************************************
42 // class definitions
43 
47  std::string stringFormat(const char* format, ...) ATTRIBUTE_FORMAT_PRINTF;
48 
56  template <typename T>
57  struct binaryToStringHelper;
58 
65  template <typename T>
66  std::ostream& operator<<(std::ostream& stream, const binaryToStringHelper<T>& binToStr)
67  {
68  for (size_t i = 0; i < binToStr.buf_.size(); ++i) {
69  int c = static_cast<int>(binToStr.buf_.at(i));
70  const bool bTrailingNull = c == 0 && i == binToStr.buf_.size() - 1;
71  if (!bTrailingNull) {
72  if (c < ' ' || c >= 127) {
73  c = '.';
74  }
75  stream.put(static_cast<char>(c));
76  }
77  }
78  return stream;
79  }
80 
81  template <typename T>
83  {
84  explicit binaryToStringHelper(const Slice<T> buf) throw() : buf_(buf)
85  {
86  }
87 
88  friend std::ostream& operator<<<T>(std::ostream& stream, const binaryToStringHelper<T>& binToStr);
89 
90  // the Slice is stored by value to avoid dangling references, in case we
91  // invoke:
92  // binaryToString(makeSlice(buf, 0, n));
93  // <- buf_ would be now dangling, were it a reference
94  const Slice<T> buf_;
95  };
96 
117  template <typename T>
119  {
120  return binaryToStringHelper<T>(sl);
121  }
122 
126  std::string binaryToHex(const byte *data, size_t size);
127 
131  std::string indent(int32_t depth);
132 
133 }} // namespace Internal, Exiv2
134 
135 #endif // #ifndef IMAGE_INT_HPP_
std::string binaryToHex(const byte *data, size_t size)
format binary for display of raw data .
Definition: image_int.cpp:60
binaryToStringHelper< T > binaryToString(const Slice< T > sl)
format binary data for display in Image::printStructure()
Definition: image_int.hpp:118
std::string indent(int32_t d)
indent output for kpsRecursive in printStructure() .
Definition: image_int.cpp:106
std::string stringFormat(const char *format,...)
format a string in the pattern of sprintf .
Definition: image_int.cpp:32
Provides classes and functions to encode and decode Exif and Iptc data. The libexiv2 API consists of ...
Definition: asfvideo.hpp:36
Helper struct for binary data output via binaryToString.
Definition: image_int.hpp:83