size_t IconvWrapper::RequiredBufferSize(const char* src, size_t srcLen) {
char buff[512];
size_t charsWritten = 0;
size_t res;
do {
char* dst = buff;
size_t dstSize = sizeof(buff);
res = conv->Convert(&src, &srcLen, &dst, &dstSize);
conv->Convert(nullptr, nullptr, &dst, &dstSize);
charsWritten += dst - buff;
} while (res == iconv_failed && errno == E2BIG);
if (res == iconv_failed) {
switch (errno) {
case EINVAL:
throw BadInput(
"One or more characters in the input string were not valid "
"characters in the given input encoding");
case EILSEQ:
throw BadOutput(
"One or more characters could not be converted to the "
"selected target encoding and the version of iconv "
"Aegisub was built with does not have useful fallbacks. "
"For best results, please build Aegisub using a recent "
"version of GNU iconv.");
default:
throw ConversionFailure("An unknown conversion failure occured");
}
}
return charsWritten;
}
size_t IconvWrapper::Convert(const char* source, size_t sourceSize, char *dest, size_t destSize) {
if (sourceSize == (size_t)-1)
sourceSize = SrcStrLen(source);
size_t res = conv->Convert(&source, &sourceSize, &dest, &destSize);
if (res == 0) res = conv->Convert(nullptr, nullptr, &dest, &destSize);
if (res == iconv_failed) {
switch (errno) {
case E2BIG:
throw BufferTooSmall(
"Destination buffer was not large enough to fit converted "
"string.");
case EINVAL:
throw BadInput(
"One or more characters in the input string were not valid "
"characters in the given input encoding");
case EILSEQ:
throw BadOutput(
"One or more characters could not be converted to the "
"selected target encoding and the version of iconv "
"Aegisub was built with does not have useful fallbacks. "
"For best results, please build Aegisub using a recent "
"version of GNU iconv.");
default:
throw ConversionFailure("An unknown conversion failure occurred");
}
}
return res;
}
void IconvWrapper::Convert(std::string const& source, std::string &dest) {
char buff[512];
const char *src = source.data();
size_t srcLen = source.size();
size_t res;
do {
char *dst = buff;
size_t dstLen = sizeof(buff);
res = conv->Convert(&src, &srcLen, &dst, &dstLen);
if (res == 0) conv->Convert(nullptr, nullptr, &dst, &dstLen);
dest.append(buff, sizeof(buff) - dstLen);
} while (res == iconv_failed && errno == E2BIG);
if (res == iconv_failed) {
switch (errno) {
case EINVAL:
throw BadInput(
"One or more characters in the input string were not valid "
"characters in the given input encoding");
case EILSEQ:
throw BadOutput(
"One or more characters could not be converted to the "
"selected target encoding and the version of iconv "
"Aegisub was built with does not have useful fallbacks. "
"For best results, please build Aegisub using a recent "
"version of GNU iconv.");
default:
throw ConversionFailure("An unknown conversion failure occurred");
}
}
}
size_t IconvWrapper::RequiredBufferSize(const char* src, size_t srcLen) {
char buff[512];
size_t charsWritten = 0;
size_t res;
do {
char* dst = buff;
size_t dstSize = sizeof(buff);
res = conv->Convert(&src, &srcLen, &dst, &dstSize);
conv->Convert(nullptr, nullptr, &dst, &dstSize);
charsWritten += dst - buff;
} while (res == iconv_failed && errno == E2BIG);
if (res == iconv_failed) {
switch (errno) {
case EINVAL:
case EILSEQ:
throw BadInput(
"One or more characters in the input string were not valid "
"characters in the given input encoding");
default:
throw ConversionFailure("An unknown conversion failure occurred");
}
}
return charsWritten;
}
void IconvWrapper::Convert(const char *src, size_t srcLen, std::string &dest) {
char buff[512];
size_t res;
do {
char *dst = buff;
size_t dstLen = sizeof(buff);
res = conv->Convert(&src, &srcLen, &dst, &dstLen);
if (res == 0) conv->Convert(nullptr, nullptr, &dst, &dstLen);
dest.append(buff, sizeof(buff) - dstLen);
} while (res == iconv_failed && errno == E2BIG);
if (res == iconv_failed) {
switch (errno) {
case EILSEQ:
case EINVAL:
throw BadInput(
"One or more characters in the input string were not valid "
"characters in the given input encoding");
default:
throw ConversionFailure("An unknown conversion failure occurred");
}
}
}
size_t IconvWrapper::Convert(const char* source, size_t sourceSize, char *dest, size_t destSize) {
if (sourceSize == (size_t)-1)
sourceSize = SrcStrLen(source);
size_t res = conv->Convert(&source, &sourceSize, &dest, &destSize);
if (res == 0) res = conv->Convert(nullptr, nullptr, &dest, &destSize);
if (res == iconv_failed) {
switch (errno) {
case E2BIG:
throw BufferTooSmall(
"Destination buffer was not large enough to fit converted "
"string.");
case EINVAL:
case EILSEQ:
throw BadInput(
"One or more characters in the input string were not valid "
"characters in the given input encoding");
default:
throw ConversionFailure("An unknown conversion failure occurred");
}
}
return res;
}
