third_party/exiv2
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don't compile WIN32 stuff when iconv is present

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MinGW has iconv, so this block of code can go away.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
This commit is contained in:
Rosen Penev 2023-03-19 18:37:45 -07:00
parent b10f2d3e95
commit 9322f137aa
1 changed files with 47 additions and 51 deletions
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98
src/convert.cpp
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@ -22,13 +22,11 @@
#include <functional>
#include <iomanip>
#if defined _WIN32
#include <windows.h>
#endif
#ifdef EXV_HAVE_ICONV
#include <iconv.h>
#include <cerrno>
#elif defined _WIN32
#include <windows.h>
#endif
// Adobe XMP Toolkit
@ -1412,7 +1410,51 @@ bool convertStringCharset(std::string& str, const char* from, const char* to) {
namespace {
using namespace Exiv2;
#if defined _WIN32
#if defined EXV_HAVE_ICONV
bool convertStringCharsetIconv(std::string& str, const char* from, const char* to) {
if (strcmp(from, to) == 0)
return true; // nothing to do
bool ret = true;
auto cd = iconv_open(to, from);
if (cd == iconv_t(-1)) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "iconv_open: " << strError() << "\n";
#endif
return false;
}
std::string outstr;
#ifdef WINICONV_CONST
auto inptr = (WINICONV_CONST char*)(str.c_str());
#else
auto inptr = (EXV_ICONV_CONST char*)(str.c_str());
#endif
size_t inbytesleft = str.length();
while (inbytesleft) {
char outbuf[256];
char* outptr = outbuf;
size_t outbytesleft = sizeof(outbuf);
size_t rc = iconv(cd, &inptr, &inbytesleft, &outptr, &outbytesleft);
const size_t outbytesProduced = sizeof(outbuf) - outbytesleft;
if (rc == std::numeric_limits<size_t>::max() && errno != E2BIG) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "iconv: " << strError() << " inbytesleft = " << inbytesleft << "\n";
#endif
ret = false;
break;
}
outstr.append(std::string(outbuf, outbytesProduced));
}
if (cd)
iconv_close(cd);
if (ret)
str = outstr;
return ret;
}
#elif defined(_WIN32)
bool swapBytes(std::string& str) {
// Naive byte-swapping, I'm sure this can be done more efficiently
if (str.size() & 1) {
@ -1560,52 +1602,6 @@ const ConvFctList convFctList[] = {
return ret;
}
#endif // defined _WIN32
#if defined EXV_HAVE_ICONV
bool convertStringCharsetIconv(std::string& str, const char* from, const char* to) {
if (0 == strcmp(from, to))
return true; // nothing to do
bool ret = true;
iconv_t cd;
cd = iconv_open(to, from);
if (cd == iconv_t(-1)) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "iconv_open: " << strError() << "\n";
#endif
return false;
}
std::string outstr;
#ifdef WINICONV_CONST
auto inptr = (WINICONV_CONST char*)(str.c_str());
#else
auto inptr = (EXV_ICONV_CONST char*)(str.c_str());
#endif
size_t inbytesleft = str.length();
while (inbytesleft) {
char outbuf[256];
char* outptr = outbuf;
size_t outbytesleft = sizeof(outbuf);
size_t rc = iconv(cd, &inptr, &inbytesleft, &outptr, &outbytesleft);
const size_t outbytesProduced = sizeof(outbuf) - outbytesleft;
if (rc == static_cast<size_t>(-1) && errno != E2BIG) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "iconv: " << strError() << " inbytesleft = " << inbytesleft << "\n";
#endif
ret = false;
break;
}
outstr.append(std::string(outbuf, outbytesProduced));
}
if (cd) {
iconv_close(cd);
}
if (ret)
str = outstr;
return ret;
}
#endif // EXV_HAVE_ICONV
bool getTextValue(std::string& value, const XmpData::iterator& pos) {
if (pos->typeId() == langAlt) {