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#include "impl.hpp"
#include "compat/assert.hpp"
#include "compat/alloca.hpp"
#include <cstring>
#include <Corrade/Utility/Path.h>
#include <Magnum/Trade/ImageData.h>
namespace floormat::loader_detail {
fm_noinline
Trade::ImageData2D loader_impl::texture(StringView prefix, StringView filename_)
{
ensure_plugins();
const auto N = prefix.size();
if (N > 0)
fm_assert(prefix[N-1] == '/');
fm_assert(filename_.size() < 4096);
fm_assert(filename_.find('\\') == filename_.end());
fm_assert(filename_.find('\0') == filename_.end());
fm_assert(tga_importer);
constexpr std::size_t max_extension_length = 16;
char* const filename = (char*)alloca(filename_.size() + N + 1 + max_extension_length);
if (N > 0)
std::memcpy(filename, prefix.data(), N);
std::memcpy(filename + N, filename_.cbegin(), filename_.size());
std::size_t len = filename_.size() + N;
for (const auto& extension : std::initializer_list<StringView>{ ".tga", ".png", ".webp", })
{
std::memcpy(filename + len, extension.data(), extension.size());
filename[len + extension.size()] = '\0';
auto& importer = extension == StringView(".tga") ? tga_importer : image_importer;
if (Path::exists(filename) && importer->openFile(filename))
{
auto img = importer->image2D(0);
if (!img)
fm_abort("can't allocate image for '%s'", filename);
auto ret = std::move(*img);
return ret;
}
}
const auto path = Path::currentDirectory();
filename[len] = '\0';
fm_abort("can't open image '%s' (cwd '%s')", filename, path ? path->data() : "(null)");
}
} // namespace floormat::loader_detail
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