[image_int] Move internal functions into separate translation unit
Dan Čermák
7 years ago
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98bca06592
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7a7ae7a1df
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/*
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* Copyright (C) 2004-2018 Exiv2 authors
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
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*/
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#include "image_int.hpp"
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#include <cstdarg>
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#include <cstddef>
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#include <cstring>
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#include <vector>
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namespace Exiv2
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{
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namespace Internal
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{
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#ifdef MSDEV_2003
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#undef vsnprintf
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#define vsnprintf _vsnprintf
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#endif
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std::string stringFormat(const char* format, ...)
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{
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std::string result;
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std::vector<char> buffer;
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size_t need = std::strlen(format); // initial guess
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int rc = -1;
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// vsnprintf writes at most size (2nd parameter) bytes (including \0)
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// returns the number of bytes required for the formatted string excluding \0
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// the following loop goes through:
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// one iteration (if 'need' was large enough for the for formatted string)
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// or two iterations (after the first call to vsnprintf we know the required length)
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do {
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buffer.resize(need + 1);
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va_list args; // variable arg list
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va_start(args, format); // args start after format
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rc = vsnprintf(&buffer[0], buffer.size(), format, args);
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va_end(args); // free the args
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assert(rc >= 0); // rc < 0 => we have made an error in the format string
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if (rc > 0)
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need = static_cast<size_t>(rc);
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} while (buffer.size() <= need);
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if (rc > 0)
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result = std::string(&buffer[0], need);
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return result;
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}
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std::string binaryToString(const byte* buff, size_t size, size_t start /*=0*/)
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{
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std::string result = "";
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size += start;
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while (start < size) {
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int c = (int)buff[start++];
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bool bTrailingNull = c == 0 && start == size;
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if (!bTrailingNull) {
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if (c < ' ' || c >= 127)
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c = '.';
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result += (char)c;
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}
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}
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return result;
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}
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std::string binaryToString(const DataBuf& buf, size_t size, size_t start /*=0*/)
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{
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if (size > (size_t)buf.size_)
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size = (size_t)buf.size_;
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return binaryToString(buf.pData_, size, start);
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}
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std::string binaryToHex(const byte* data, size_t size)
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{
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std::stringstream hexOutput;
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unsigned long tl = (unsigned long)((size / 16) * 16);
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unsigned long tl_offset = (unsigned long)(size - tl);
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for (unsigned long loop = 0; loop < (unsigned long)size; loop++) {
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if (data[loop] < 16) {
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hexOutput << "0";
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}
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hexOutput << std::hex << (int)data[loop];
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if ((loop % 8) == 7) {
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hexOutput << " ";
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}
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if ((loop % 16) == 15 || loop == (tl + tl_offset - 1)) {
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int max = 15;
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if (loop >= tl) {
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max = tl_offset - 1;
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for (int offset = 0; offset < (int)(16 - tl_offset); offset++) {
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if ((offset % 8) == 7) {
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hexOutput << " ";
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}
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hexOutput << " ";
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}
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}
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hexOutput << " ";
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for (int offset = max; offset >= 0; offset--) {
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if (offset == (max - 8)) {
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hexOutput << " ";
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}
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byte c = '.';
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if (data[loop - offset] >= 0x20 && data[loop - offset] <= 0x7E) {
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c = data[loop - offset];
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}
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hexOutput << (char)c;
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}
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hexOutput << std::endl;
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}
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}
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hexOutput << std::endl << std::endl << std::endl;
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return hexOutput.str();
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}
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std::string indent(int32_t d)
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{
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std::string result;
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if (d > 0)
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while (d--)
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result += " ";
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return result;
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}
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} // namespace Internal
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} // namespace Exiv2
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