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#include "iconv.h"
#include <iconv.h>
using namespace NICONVPrivate;
TDescriptor::TDescriptor(const char* from, const char* to)
: Descriptor_(iconv_open(to, from))
, From_(from)
, To_(to)
{
#if defined(USE_ICONV_EXTENSIONS)
if (!Invalid()) {
int temp = 1;
libiconvctl(Descriptor_, ICONV_SET_DISCARD_ILSEQ, &temp);
}
#endif
}
TDescriptor::~TDescriptor() {
if (!Invalid()) {
iconv_close(static_cast<iconv_t>(Descriptor_));
}
}
size_t NICONVPrivate::RecodeImpl(const TDescriptor& descriptor, const char* in, char* out, size_t inSize, size_t outSize, size_t& read, size_t& written) {
Y_ASSERT(!descriptor.Invalid());
Y_ASSERT(in);
Y_ASSERT(out);
char* inPtr = const_cast<char*>(in);
char* outPtr = out;
size_t inSizeMod = inSize;
size_t outSizeMod = outSize;
size_t res = iconv(static_cast<iconv_t>(descriptor.Get()), &inPtr, &inSizeMod, &outPtr, &outSizeMod);
read = inSize - inSizeMod;
written = outSize - outSizeMod;
return res;
}
void NICONVPrivate::DoRecode(const TDescriptor& descriptor, const char* in, char* out, size_t inSize, size_t outSize, size_t& read, size_t& written) {
if (descriptor.Invalid()) {
ythrow yexception() << "Can not convert from " << descriptor.From() << " to " << descriptor.To();
}
size_t res = RecodeImpl(descriptor, in, out, inSize, outSize, read, written);
if (res == static_cast<size_t>(-1)) {
switch (errno) {
case EILSEQ:
read = inSize;
break;
case EINVAL:
read = inSize;
break;
case E2BIG:
ythrow yexception() << "Iconv error: output buffer is too small";
default:
ythrow yexception() << "Unknown iconv error";
}
}
}
RECODE_RESULT NICONVPrivate::DoRecodeNoThrow(const TDescriptor& descriptor, const char* in, char* out, size_t inSize, size_t outSize, size_t& read, size_t& written) {
if (descriptor.Invalid()) {
return RECODE_ERROR;
}
size_t res = RecodeImpl(descriptor, in, out, inSize, outSize, read, written);
if (res == static_cast<size_t>(-1)) {
switch (errno) {
case EILSEQ:
read = inSize;
break;
case EINVAL:
read = inSize;
break;
case E2BIG:
return RECODE_EOOUTPUT;
default:
return RECODE_ERROR;
}
}
return RECODE_OK;
}
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