Exiv2
image_int.hpp
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1// ***************************************************************** -*- C++ -*-
2/*
3 * Copyright (C) 2004-2018 Exiv2 authors
4 * This program is part of the Exiv2 distribution.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
19 */
27#ifndef IMAGE_INT_HPP_
28#define IMAGE_INT_HPP_
29
30// *****************************************************************************
31// included header files
32#include "types.hpp"
33
34// + standard includes
35#include <string>
36
37#if (defined(__GNUG__) || defined(__GNUC__)) || defined(__clang__)
38#define ATTRIBUTE_FORMAT_PRINTF __attribute__((format(printf, 1, 0)))
39#else
40#define ATTRIBUTE_FORMAT_PRINTF
41#endif
42
43// *****************************************************************************
44// namespace extensions
45namespace Exiv2 {
46 namespace Internal {
47
48// *****************************************************************************
49// class definitions
50
54 std::string stringFormat(const char* format, ...) ATTRIBUTE_FORMAT_PRINTF;
55
63 template <typename T>
64 struct binaryToStringHelper;
65
72 template <typename T>
73 std::ostream& operator<<(std::ostream& stream, const binaryToStringHelper<T>& binToStr)
74 {
75 for (size_t i = 0; i < binToStr.buf_.size(); ++i) {
76 int c = static_cast<int>(binToStr.buf_.at(i));
77 const bool bTrailingNull = c == 0 && i == binToStr.buf_.size() - 1;
78 if (!bTrailingNull) {
79 if (c < ' ' || c >= 127) {
80 c = '.';
81 }
82 stream.put(static_cast<char>(c));
83 }
84 }
85 return stream;
86 }
87
88 template <typename T>
90 {
91 explicit binaryToStringHelper(const Slice<T> buf) throw() : buf_(buf)
92 {
93 }
94
95 friend std::ostream& operator<<<T>(std::ostream& stream, const binaryToStringHelper<T>& binToStr);
96
97 // the Slice is stored by value to avoid dangling references, in case we
98 // invoke:
99 // binaryToString(makeSlice(buf, 0, n));
100 // <- buf_ would be now dangling, were it a reference
101 const Slice<T> buf_;
102 };
103
124 template <typename T>
126 {
127 return binaryToStringHelper<T>(sl);
128 }
129
133 std::string binaryToHex(const byte *data, size_t size);
134
138 std::string indent(int32_t depth);
139
140}} // namespace Internal, Exiv2
141
142#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
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
binaryToStringHelper< T > binaryToString(const Slice< T > sl)
format binary data for display in Image::printStructure()
Definition: image_int.hpp:125
Provides classes and functions to encode and decode Exif and Iptc data. The libexiv2 API consists of ...
Definition: asfvideo.hpp:36
@ string
IPTC string type.
Definition: types.hpp:147
Helper struct for binary data output via binaryToString.
Definition: image_int.hpp:90
Type definitions for Exiv2 and related functionality.