FILE *linkBuf(FILE *stream, LINEBUF *IFS, size_t size)
{
if (stream != NULL) {
if (IFS == NULL)
stream = NULL;
else {
if (IFS->stream != NULL && closeBuf(IFS, 1))
stream = NULL;
else {
IFS->stream = NULL;
if (size != 0 && size != IFS->lineLength) {
if (IFS->buffer != NULL)
FREE(IFS->buffer);
IFS->buffer = MALLOC(size);
IFS->lineLength = size;
}
IFS->stream = stream;
IFS->norewind=!rewindable(IFS->stream);
IFS->fullLineRead = 1;
IFS->isComment = 0;
IFS->commentChar = '#';
IFS->bufferOffset = ftell(stream);
}
}
}
return stream;
}
BufferedImage::Ref load_image(InputStream& in,
std::string source_name, std::string format_name,
Logger* logger,
FileFormat::ProgressTracker* tracker,
FileFormat::Registry::ConstRefArg r)
{
FileFormat::Registry::ConstRef registry = r;
if (!registry)
registry = FileFormat::Registry::get_default_registry();
RewindableStream rewindable(in);
// Primary auto-detection
if (format_name.empty()) {
for (int i = 0; i < registry->get_num_formats(); ++i) {
FileFormat::ConstRef f = registry->get_format(i);
bool s = f->check_signature(rewindable);
rewindable.rewind();
if (!s)
continue;
format_name = f->get_name();
break;
}
}
rewindable.release();
// Secondary auto-detection
if (format_name.empty()) {
std::string suffix = ascii_tolower(file::suffix_of(source_name));
if (!suffix.empty()) {
for (int i = 0; i < registry->get_num_formats(); ++i) {
FileFormat::ConstRef f = registry->get_format(i);
if (!f->check_suffix(suffix))
continue;
format_name = f->get_name();
break;
}
}
}
if (format_name.empty()) {
throw UnresolvableFormatException("Image format could not be detected from the initial "
"data nor from the file name: \""+source_name+"\"");
}
for (int i = 0; i < registry->get_num_formats(); ++i) {
FileFormat::ConstRef f = registry->get_format(i);
if (format_name != f->get_name())
continue;
BufferedImage::Ref j = f->load(rewindable, logger, tracker);
return j;
}
throw UnknownFormatException("Unrecognized format specifier: \""+format_name+"\"");
}
FILE *openBuf(const char *path, const char *mode, LINEBUF *IFS, size_t size)
{
if (size != 0) {
IFS->buffer = MALLOC(size);
IFS->lineLength = size;
IFS->stream = NULL;
}
if (size == 0 || IFS->buffer != NULL) {
IFS->stream=fopen(path, mode);
IFS->norewind=!rewindable(IFS->stream);
IFS->fullLineRead = 1;
IFS->isComment = 0;
IFS->commentChar = '#';
IFS->bufferOffset = (IFS->stream == NULL) ? 0 : ftell(IFS->stream);
}
return IFS->stream;
}
